diff --git a/codegen-templates/csharp/types/struct.cs.jinja b/codegen-templates/csharp/types/struct.cs.jinja
index a6abc4e04..f64d013a8 100644
--- a/codegen-templates/csharp/types/struct.cs.jinja
+++ b/codegen-templates/csharp/types/struct.cs.jinja
@@ -21,6 +21,5 @@ namespace Svix.Models {
             sb.Append("}\n");
             return sb.ToString();
         }
-
     }
 }
diff --git a/codegen-templates/csharp/types/struct_enum.cs.jinja b/codegen-templates/csharp/types/struct_enum.cs.jinja
index 38d1e788a..6480b39a4 100644
--- a/codegen-templates/csharp/types/struct_enum.cs.jinja
+++ b/codegen-templates/csharp/types/struct_enum.cs.jinja
@@ -19,7 +19,7 @@ namespace Svix.Models {
     {
         {% include "types/struct_fields.cs.jinja" %}
         [JsonIgnore]
-        public required {{ enum_type_name }} {{ content_field_name }} { get; set; }
+        public {{ enum_type_name }} {{ content_field_name }} { get; set; }
 
         [JsonProperty("{{ type.discriminator_field }}")]
         private string {{ discriminator_field_name }} => Config.GetDiscriminator();
@@ -164,10 +164,10 @@ namespace Svix.Models {
     {
         {% include "types/struct_fields.cs.jinja" %}
         [JsonProperty("{{ type.discriminator_field }}", Required = Required.Always)]
-        public required string {{ discriminator_field_name }} { get; set; }
+        public string {{ discriminator_field_name }} { get; set; }
 
         [JsonProperty("{{ type.content_field }}", Required = Required.Always)]
-        public required JObject {{ content_field_name }} { get; set; }
+        public JObject {{ content_field_name }} { get; set; }
 
     }
 
diff --git a/codegen-templates/csharp/types/struct_fields.cs.jinja b/codegen-templates/csharp/types/struct_fields.cs.jinja
index a8680e9b5..fd9e2db3a 100644
--- a/codegen-templates/csharp/types/struct_fields.cs.jinja
+++ b/codegen-templates/csharp/types/struct_fields.cs.jinja
@@ -2,19 +2,17 @@
     {% set is_patch = type.name is endingwith "Patch" -%}
     [JsonProperty("{{ field.name }}"{% if field.required and not field.nullable %},Required = Required.Always{% endif %})]
     {% set f_ty = field.type.to_csharp() -%}
-    {% set modifier = "public"-%}
     {% if field.nullable or not field.required -%}
         {% set f_ty %}{{ f_ty }}?{% endset -%}
         {% set f_val = "= null;" -%}
     {% else -%}
-        {% set modifier %}{{ modifier }} required{% endset -%}
         {% set f_val = "" -%}
     {% endif -%}
     {% if is_patch and field.nullable -%}
         {% set f_ty %}MaybeUnset<{{ f_ty }}>{% endset -%}
         {% set f_val %}= {{ f_ty }}.Unset();{% endset -%}
     {% endif -%}
-    {{ modifier }} {{ f_ty }} {{ field.name | to_upper_camel_case }} { get; set; } {{ f_val }}
+    public {{ f_ty }} {{ field.name | to_upper_camel_case }} { get; set; } {{ f_val }}
     {% if is_patch and field.nullable -%}
     public bool ShouldSerialize{{ field.name | to_upper_camel_case }}() => !{{ field.name | to_upper_camel_case }}.IsUnset;
     {% elif is_patch and not field.nullable -%}
diff --git a/csharp/Svix/Models/AdobeSignConfig.cs b/csharp/Svix/Models/AdobeSignConfig.cs
index 92fc16d4d..021462bd0 100644
--- a/csharp/Svix/Models/AdobeSignConfig.cs
+++ b/csharp/Svix/Models/AdobeSignConfig.cs
@@ -7,7 +7,7 @@ namespace Svix.Models
     public class AdobeSignConfig
     {
         [JsonProperty("clientId", Required = Required.Always)]
-        public required string ClientId { get; set; }
+        public string ClientId { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/AggregateEventTypesOut.cs b/csharp/Svix/Models/AggregateEventTypesOut.cs
index 3a091fbab..15ccefda0 100644
--- a/csharp/Svix/Models/AggregateEventTypesOut.cs
+++ b/csharp/Svix/Models/AggregateEventTypesOut.cs
@@ -7,13 +7,13 @@ namespace Svix.Models
     public class AggregateEventTypesOut
     {
         [JsonProperty("id", Required = Required.Always)]
-        public required string Id { get; set; }
+        public string Id { get; set; }
 
         [JsonProperty("status", Required = Required.Always)]
-        public required BackgroundTaskStatus Status { get; set; }
+        public BackgroundTaskStatus Status { get; set; }
 
         [JsonProperty("task", Required = Required.Always)]
-        public required BackgroundTaskType Task { get; set; }
+        public BackgroundTaskType Task { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/ApiTokenCensoredOut.cs b/csharp/Svix/Models/ApiTokenCensoredOut.cs
index 4adc8f19a..85f8ba9a2 100644
--- a/csharp/Svix/Models/ApiTokenCensoredOut.cs
+++ b/csharp/Svix/Models/ApiTokenCensoredOut.cs
@@ -7,16 +7,16 @@ namespace Svix.Models
     public class ApiTokenCensoredOut
     {
         [JsonProperty("censoredToken", Required = Required.Always)]
-        public required string CensoredToken { get; set; }
+        public string CensoredToken { get; set; }
 
         [JsonProperty("createdAt", Required = Required.Always)]
-        public required DateTime CreatedAt { get; set; }
+        public DateTime CreatedAt { get; set; }
 
         [JsonProperty("expiresAt")]
         public DateTime? ExpiresAt { get; set; } = null;
 
         [JsonProperty("id", Required = Required.Always)]
-        public required string Id { get; set; }
+        public string Id { get; set; }
 
         [JsonProperty("name")]
         public string? Name { get; set; } = null;
diff --git a/csharp/Svix/Models/ApiTokenIn.cs b/csharp/Svix/Models/ApiTokenIn.cs
index daed1eb7d..7d03246f8 100644
--- a/csharp/Svix/Models/ApiTokenIn.cs
+++ b/csharp/Svix/Models/ApiTokenIn.cs
@@ -7,7 +7,7 @@ namespace Svix.Models
     public class ApiTokenIn
     {
         [JsonProperty("name", Required = Required.Always)]
-        public required string Name { get; set; }
+        public string Name { get; set; }
 
         [JsonProperty("scopes")]
         public List<string>? Scopes { get; set; } = null;
diff --git a/csharp/Svix/Models/ApiTokenOut.cs b/csharp/Svix/Models/ApiTokenOut.cs
index b8f7d45fe..5a0cd016f 100644
--- a/csharp/Svix/Models/ApiTokenOut.cs
+++ b/csharp/Svix/Models/ApiTokenOut.cs
@@ -7,13 +7,13 @@ namespace Svix.Models
     public class ApiTokenOut
     {
         [JsonProperty("createdAt", Required = Required.Always)]
-        public required DateTime CreatedAt { get; set; }
+        public DateTime CreatedAt { get; set; }
 
         [JsonProperty("expiresAt")]
         public DateTime? ExpiresAt { get; set; } = null;
 
         [JsonProperty("id", Required = Required.Always)]
-        public required string Id { get; set; }
+        public string Id { get; set; }
 
         [JsonProperty("name")]
         public string? Name { get; set; } = null;
@@ -22,7 +22,7 @@ public class ApiTokenOut
         public List<string>? Scopes { get; set; } = null;
 
         [JsonProperty("token", Required = Required.Always)]
-        public required string Token { get; set; }
+        public string Token { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/AppPortalAccessOut.cs b/csharp/Svix/Models/AppPortalAccessOut.cs
index ab55e99d2..440610cb6 100644
--- a/csharp/Svix/Models/AppPortalAccessOut.cs
+++ b/csharp/Svix/Models/AppPortalAccessOut.cs
@@ -7,10 +7,10 @@ namespace Svix.Models
     public class AppPortalAccessOut
     {
         [JsonProperty("token", Required = Required.Always)]
-        public required string Token { get; set; }
+        public string Token { get; set; }
 
         [JsonProperty("url", Required = Required.Always)]
-        public required string Url { get; set; }
+        public string Url { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/AppUsageStatsIn.cs b/csharp/Svix/Models/AppUsageStatsIn.cs
index 5cce64106..0837dd663 100644
--- a/csharp/Svix/Models/AppUsageStatsIn.cs
+++ b/csharp/Svix/Models/AppUsageStatsIn.cs
@@ -10,10 +10,10 @@ public class AppUsageStatsIn
         public List<string>? AppIds { get; set; } = null;
 
         [JsonProperty("since", Required = Required.Always)]
-        public required DateTime Since { get; set; }
+        public DateTime Since { get; set; }
 
         [JsonProperty("until", Required = Required.Always)]
-        public required DateTime Until { get; set; }
+        public DateTime Until { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/AppUsageStatsOut.cs b/csharp/Svix/Models/AppUsageStatsOut.cs
index a3a8f5be3..85965b66c 100644
--- a/csharp/Svix/Models/AppUsageStatsOut.cs
+++ b/csharp/Svix/Models/AppUsageStatsOut.cs
@@ -7,16 +7,16 @@ namespace Svix.Models
     public class AppUsageStatsOut
     {
         [JsonProperty("id", Required = Required.Always)]
-        public required string Id { get; set; }
+        public string Id { get; set; }
 
         [JsonProperty("status", Required = Required.Always)]
-        public required BackgroundTaskStatus Status { get; set; }
+        public BackgroundTaskStatus Status { get; set; }
 
         [JsonProperty("task", Required = Required.Always)]
-        public required BackgroundTaskType Task { get; set; }
+        public BackgroundTaskType Task { get; set; }
 
         [JsonProperty("unresolvedAppIds", Required = Required.Always)]
-        public required List<string> UnresolvedAppIds { get; set; }
+        public List<string> UnresolvedAppIds { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/ApplicationIn.cs b/csharp/Svix/Models/ApplicationIn.cs
index 4abbfb146..d4e7fba02 100644
--- a/csharp/Svix/Models/ApplicationIn.cs
+++ b/csharp/Svix/Models/ApplicationIn.cs
@@ -10,7 +10,7 @@ public class ApplicationIn
         public Dictionary<string, string>? Metadata { get; set; } = null;
 
         [JsonProperty("name", Required = Required.Always)]
-        public required string Name { get; set; }
+        public string Name { get; set; }
 
         [JsonProperty("rateLimit")]
         public ushort? RateLimit { get; set; } = null;
diff --git a/csharp/Svix/Models/ApplicationOut.cs b/csharp/Svix/Models/ApplicationOut.cs
index fed728202..7ad237618 100644
--- a/csharp/Svix/Models/ApplicationOut.cs
+++ b/csharp/Svix/Models/ApplicationOut.cs
@@ -7,16 +7,16 @@ namespace Svix.Models
     public class ApplicationOut
     {
         [JsonProperty("createdAt", Required = Required.Always)]
-        public required DateTime CreatedAt { get; set; }
+        public DateTime CreatedAt { get; set; }
 
         [JsonProperty("id", Required = Required.Always)]
-        public required string Id { get; set; }
+        public string Id { get; set; }
 
         [JsonProperty("metadata", Required = Required.Always)]
-        public required Dictionary<string, string> Metadata { get; set; }
+        public Dictionary<string, string> Metadata { get; set; }
 
         [JsonProperty("name", Required = Required.Always)]
-        public required string Name { get; set; }
+        public string Name { get; set; }
 
         [JsonProperty("rateLimit")]
         public ushort? RateLimit { get; set; } = null;
@@ -25,7 +25,7 @@ public class ApplicationOut
         public string? Uid { get; set; } = null;
 
         [JsonProperty("updatedAt", Required = Required.Always)]
-        public required DateTime UpdatedAt { get; set; }
+        public DateTime UpdatedAt { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/BackgroundTaskFinishedEvent.cs b/csharp/Svix/Models/BackgroundTaskFinishedEvent.cs
index aa36a161d..6c9fe484c 100644
--- a/csharp/Svix/Models/BackgroundTaskFinishedEvent.cs
+++ b/csharp/Svix/Models/BackgroundTaskFinishedEvent.cs
@@ -11,10 +11,10 @@ namespace Svix.Models
     public class BackgroundTaskFinishedEvent
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required BackgroundTaskFinishedEvent2 Data { get; set; }
+        public BackgroundTaskFinishedEvent2 Data { get; set; }
 
         [JsonProperty("type", Required = Required.Always)]
-        public required string Type { get; set; }
+        public string Type { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/BackgroundTaskFinishedEvent2.cs b/csharp/Svix/Models/BackgroundTaskFinishedEvent2.cs
index 0fa053838..26976757e 100644
--- a/csharp/Svix/Models/BackgroundTaskFinishedEvent2.cs
+++ b/csharp/Svix/Models/BackgroundTaskFinishedEvent2.cs
@@ -7,16 +7,16 @@ namespace Svix.Models
     public class BackgroundTaskFinishedEvent2
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required Object Data { get; set; }
+        public Object Data { get; set; }
 
         [JsonProperty("status", Required = Required.Always)]
-        public required BackgroundTaskStatus Status { get; set; }
+        public BackgroundTaskStatus Status { get; set; }
 
         [JsonProperty("task", Required = Required.Always)]
-        public required BackgroundTaskType Task { get; set; }
+        public BackgroundTaskType Task { get; set; }
 
         [JsonProperty("taskId", Required = Required.Always)]
-        public required string TaskId { get; set; }
+        public string TaskId { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/BackgroundTaskOut.cs b/csharp/Svix/Models/BackgroundTaskOut.cs
index 352b9c24b..15bf7f79b 100644
--- a/csharp/Svix/Models/BackgroundTaskOut.cs
+++ b/csharp/Svix/Models/BackgroundTaskOut.cs
@@ -7,16 +7,16 @@ namespace Svix.Models
     public class BackgroundTaskOut
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required Object Data { get; set; }
+        public Object Data { get; set; }
 
         [JsonProperty("id", Required = Required.Always)]
-        public required string Id { get; set; }
+        public string Id { get; set; }
 
         [JsonProperty("status", Required = Required.Always)]
-        public required BackgroundTaskStatus Status { get; set; }
+        public BackgroundTaskStatus Status { get; set; }
 
         [JsonProperty("task", Required = Required.Always)]
-        public required BackgroundTaskType Task { get; set; }
+        public BackgroundTaskType Task { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/ConnectorIn.cs b/csharp/Svix/Models/ConnectorIn.cs
index 33ba74f53..749f9f895 100644
--- a/csharp/Svix/Models/ConnectorIn.cs
+++ b/csharp/Svix/Models/ConnectorIn.cs
@@ -25,13 +25,13 @@ public class ConnectorIn
         public ConnectorKind? Kind { get; set; } = null;
 
         [JsonProperty("logo", Required = Required.Always)]
-        public required string Logo { get; set; }
+        public string Logo { get; set; }
 
         [JsonProperty("name", Required = Required.Always)]
-        public required string Name { get; set; }
+        public string Name { get; set; }
 
         [JsonProperty("transformation", Required = Required.Always)]
-        public required string Transformation { get; set; }
+        public string Transformation { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/ConnectorOut.cs b/csharp/Svix/Models/ConnectorOut.cs
index 70c169253..ac0f62dbc 100644
--- a/csharp/Svix/Models/ConnectorOut.cs
+++ b/csharp/Svix/Models/ConnectorOut.cs
@@ -7,10 +7,10 @@ namespace Svix.Models
     public class ConnectorOut
     {
         [JsonProperty("createdAt", Required = Required.Always)]
-        public required DateTime CreatedAt { get; set; }
+        public DateTime CreatedAt { get; set; }
 
         [JsonProperty("description", Required = Required.Always)]
-        public required string Description { get; set; }
+        public string Description { get; set; }
 
         [JsonProperty("featureFlag")]
         public string? FeatureFlag { get; set; } = null;
@@ -19,31 +19,31 @@ public class ConnectorOut
         public List<string>? FilterTypes { get; set; } = null;
 
         [JsonProperty("id", Required = Required.Always)]
-        public required string Id { get; set; }
+        public string Id { get; set; }
 
         [JsonProperty("instructions", Required = Required.Always)]
-        public required string Instructions { get; set; }
+        public string Instructions { get; set; }
 
         [JsonProperty("instructionsLink")]
         public string? InstructionsLink { get; set; } = null;
 
         [JsonProperty("kind", Required = Required.Always)]
-        public required ConnectorKind Kind { get; set; }
+        public ConnectorKind Kind { get; set; }
 
         [JsonProperty("logo", Required = Required.Always)]
-        public required string Logo { get; set; }
+        public string Logo { get; set; }
 
         [JsonProperty("name", Required = Required.Always)]
-        public required string Name { get; set; }
+        public string Name { get; set; }
 
         [JsonProperty("orgId", Required = Required.Always)]
-        public required string OrgId { get; set; }
+        public string OrgId { get; set; }
 
         [JsonProperty("transformation", Required = Required.Always)]
-        public required string Transformation { get; set; }
+        public string Transformation { get; set; }
 
         [JsonProperty("updatedAt", Required = Required.Always)]
-        public required DateTime UpdatedAt { get; set; }
+        public DateTime UpdatedAt { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/CronConfig.cs b/csharp/Svix/Models/CronConfig.cs
index ceb0aad2b..90128f0c8 100644
--- a/csharp/Svix/Models/CronConfig.cs
+++ b/csharp/Svix/Models/CronConfig.cs
@@ -10,10 +10,10 @@ public class CronConfig
         public string? ContentType { get; set; } = null;
 
         [JsonProperty("payload", Required = Required.Always)]
-        public required string Payload { get; set; }
+        public string Payload { get; set; }
 
         [JsonProperty("schedule", Required = Required.Always)]
-        public required string Schedule { get; set; }
+        public string Schedule { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/DashboardAccessOut.cs b/csharp/Svix/Models/DashboardAccessOut.cs
index 4c2204a36..e80b3fc96 100644
--- a/csharp/Svix/Models/DashboardAccessOut.cs
+++ b/csharp/Svix/Models/DashboardAccessOut.cs
@@ -7,10 +7,10 @@ namespace Svix.Models
     public class DashboardAccessOut
     {
         [JsonProperty("token", Required = Required.Always)]
-        public required string Token { get; set; }
+        public string Token { get; set; }
 
         [JsonProperty("url", Required = Required.Always)]
-        public required string Url { get; set; }
+        public string Url { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/EndpointCreatedEvent.cs b/csharp/Svix/Models/EndpointCreatedEvent.cs
index ceffff759..6e73d0540 100644
--- a/csharp/Svix/Models/EndpointCreatedEvent.cs
+++ b/csharp/Svix/Models/EndpointCreatedEvent.cs
@@ -11,10 +11,10 @@ namespace Svix.Models
     public class EndpointCreatedEvent
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required EndpointCreatedEventData Data { get; set; }
+        public EndpointCreatedEventData Data { get; set; }
 
         [JsonProperty("type", Required = Required.Always)]
-        public required string Type { get; set; }
+        public string Type { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/EndpointCreatedEventData.cs b/csharp/Svix/Models/EndpointCreatedEventData.cs
index 9e0ee155c..522b650d3 100644
--- a/csharp/Svix/Models/EndpointCreatedEventData.cs
+++ b/csharp/Svix/Models/EndpointCreatedEventData.cs
@@ -11,13 +11,13 @@ namespace Svix.Models
     public class EndpointCreatedEventData
     {
         [JsonProperty("appId", Required = Required.Always)]
-        public required string AppId { get; set; }
+        public string AppId { get; set; }
 
         [JsonProperty("appUid")]
         public string? AppUid { get; set; } = null;
 
         [JsonProperty("endpointId", Required = Required.Always)]
-        public required string EndpointId { get; set; }
+        public string EndpointId { get; set; }
 
         [JsonProperty("endpointUid")]
         public string? EndpointUid { get; set; } = null;
diff --git a/csharp/Svix/Models/EndpointDeletedEvent.cs b/csharp/Svix/Models/EndpointDeletedEvent.cs
index 6f99726e4..d13c6018e 100644
--- a/csharp/Svix/Models/EndpointDeletedEvent.cs
+++ b/csharp/Svix/Models/EndpointDeletedEvent.cs
@@ -11,10 +11,10 @@ namespace Svix.Models
     public class EndpointDeletedEvent
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required EndpointDeletedEventData Data { get; set; }
+        public EndpointDeletedEventData Data { get; set; }
 
         [JsonProperty("type", Required = Required.Always)]
-        public required string Type { get; set; }
+        public string Type { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/EndpointDeletedEventData.cs b/csharp/Svix/Models/EndpointDeletedEventData.cs
index d8196a2f6..e567b4771 100644
--- a/csharp/Svix/Models/EndpointDeletedEventData.cs
+++ b/csharp/Svix/Models/EndpointDeletedEventData.cs
@@ -11,13 +11,13 @@ namespace Svix.Models
     public class EndpointDeletedEventData
     {
         [JsonProperty("appId", Required = Required.Always)]
-        public required string AppId { get; set; }
+        public string AppId { get; set; }
 
         [JsonProperty("appUid")]
         public string? AppUid { get; set; } = null;
 
         [JsonProperty("endpointId", Required = Required.Always)]
-        public required string EndpointId { get; set; }
+        public string EndpointId { get; set; }
 
         [JsonProperty("endpointUid")]
         public string? EndpointUid { get; set; } = null;
diff --git a/csharp/Svix/Models/EndpointDisabledEvent.cs b/csharp/Svix/Models/EndpointDisabledEvent.cs
index 00ee3e35a..df0274766 100644
--- a/csharp/Svix/Models/EndpointDisabledEvent.cs
+++ b/csharp/Svix/Models/EndpointDisabledEvent.cs
@@ -11,10 +11,10 @@ namespace Svix.Models
     public class EndpointDisabledEvent
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required EndpointDisabledEventData Data { get; set; }
+        public EndpointDisabledEventData Data { get; set; }
 
         [JsonProperty("type", Required = Required.Always)]
-        public required string Type { get; set; }
+        public string Type { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/EndpointDisabledEventData.cs b/csharp/Svix/Models/EndpointDisabledEventData.cs
index d9a72ef5b..509bea6a5 100644
--- a/csharp/Svix/Models/EndpointDisabledEventData.cs
+++ b/csharp/Svix/Models/EndpointDisabledEventData.cs
@@ -11,13 +11,13 @@ namespace Svix.Models
     public class EndpointDisabledEventData
     {
         [JsonProperty("appId", Required = Required.Always)]
-        public required string AppId { get; set; }
+        public string AppId { get; set; }
 
         [JsonProperty("appUid")]
         public string? AppUid { get; set; } = null;
 
         [JsonProperty("endpointId", Required = Required.Always)]
-        public required string EndpointId { get; set; }
+        public string EndpointId { get; set; }
 
         [JsonProperty("endpointUid")]
         public string? EndpointUid { get; set; } = null;
diff --git a/csharp/Svix/Models/EndpointEnabledEvent.cs b/csharp/Svix/Models/EndpointEnabledEvent.cs
index 0ba28e510..9009fade4 100644
--- a/csharp/Svix/Models/EndpointEnabledEvent.cs
+++ b/csharp/Svix/Models/EndpointEnabledEvent.cs
@@ -11,10 +11,10 @@ namespace Svix.Models
     public class EndpointEnabledEvent
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required EndpointEnabledEventData Data { get; set; }
+        public EndpointEnabledEventData Data { get; set; }
 
         [JsonProperty("type", Required = Required.Always)]
-        public required string Type { get; set; }
+        public string Type { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/EndpointEnabledEventData.cs b/csharp/Svix/Models/EndpointEnabledEventData.cs
index e6b2a5fcd..5ebd72e48 100644
--- a/csharp/Svix/Models/EndpointEnabledEventData.cs
+++ b/csharp/Svix/Models/EndpointEnabledEventData.cs
@@ -11,13 +11,13 @@ namespace Svix.Models
     public class EndpointEnabledEventData
     {
         [JsonProperty("appId", Required = Required.Always)]
-        public required string AppId { get; set; }
+        public string AppId { get; set; }
 
         [JsonProperty("appUid")]
         public string? AppUid { get; set; } = null;
 
         [JsonProperty("endpointId", Required = Required.Always)]
-        public required string EndpointId { get; set; }
+        public string EndpointId { get; set; }
 
         [JsonProperty("endpointUid")]
         public string? EndpointUid { get; set; } = null;
diff --git a/csharp/Svix/Models/EndpointHeadersIn.cs b/csharp/Svix/Models/EndpointHeadersIn.cs
index 0d9e8f012..537af22da 100644
--- a/csharp/Svix/Models/EndpointHeadersIn.cs
+++ b/csharp/Svix/Models/EndpointHeadersIn.cs
@@ -7,7 +7,7 @@ namespace Svix.Models
     public class EndpointHeadersIn
     {
         [JsonProperty("headers", Required = Required.Always)]
-        public required Dictionary<string, string> Headers { get; set; }
+        public Dictionary<string, string> Headers { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/EndpointHeadersOut.cs b/csharp/Svix/Models/EndpointHeadersOut.cs
index 00270daf8..d540b03e7 100644
--- a/csharp/Svix/Models/EndpointHeadersOut.cs
+++ b/csharp/Svix/Models/EndpointHeadersOut.cs
@@ -13,10 +13,10 @@ namespace Svix.Models
     public class EndpointHeadersOut
     {
         [JsonProperty("headers", Required = Required.Always)]
-        public required Dictionary<string, string> Headers { get; set; }
+        public Dictionary<string, string> Headers { get; set; }
 
         [JsonProperty("sensitive", Required = Required.Always)]
-        public required List<string> Sensitive { get; set; }
+        public List<string> Sensitive { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/EndpointHeadersPatchIn.cs b/csharp/Svix/Models/EndpointHeadersPatchIn.cs
index b70d0f7ae..e95d49301 100644
--- a/csharp/Svix/Models/EndpointHeadersPatchIn.cs
+++ b/csharp/Svix/Models/EndpointHeadersPatchIn.cs
@@ -7,7 +7,7 @@ namespace Svix.Models
     public class EndpointHeadersPatchIn
     {
         [JsonProperty("headers", Required = Required.Always)]
-        public required Dictionary<string, string> Headers { get; set; }
+        public Dictionary<string, string> Headers { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/EndpointIn.cs b/csharp/Svix/Models/EndpointIn.cs
index 27b0f96f3..b1320b5f7 100644
--- a/csharp/Svix/Models/EndpointIn.cs
+++ b/csharp/Svix/Models/EndpointIn.cs
@@ -34,7 +34,7 @@ public class EndpointIn
         public string? Uid { get; set; } = null;
 
         [JsonProperty("url", Required = Required.Always)]
-        public required string Url { get; set; }
+        public string Url { get; set; }
 
         [JsonProperty("version")]
         public ushort? Version { get; set; } = null;
diff --git a/csharp/Svix/Models/EndpointMessageOut.cs b/csharp/Svix/Models/EndpointMessageOut.cs
index 210dc1f31..c667bdeec 100644
--- a/csharp/Svix/Models/EndpointMessageOut.cs
+++ b/csharp/Svix/Models/EndpointMessageOut.cs
@@ -17,25 +17,25 @@ public class EndpointMessageOut
         public string? EventId { get; set; } = null;
 
         [JsonProperty("eventType", Required = Required.Always)]
-        public required string EventType { get; set; }
+        public string EventType { get; set; }
 
         [JsonProperty("id", Required = Required.Always)]
-        public required string Id { get; set; }
+        public string Id { get; set; }
 
         [JsonProperty("nextAttempt")]
         public DateTime? NextAttempt { get; set; } = null;
 
         [JsonProperty("payload", Required = Required.Always)]
-        public required Object Payload { get; set; }
+        public Object Payload { get; set; }
 
         [JsonProperty("status", Required = Required.Always)]
-        public required MessageStatus Status { get; set; }
+        public MessageStatus Status { get; set; }
 
         [JsonProperty("tags")]
         public List<string>? Tags { get; set; } = null;
 
         [JsonProperty("timestamp", Required = Required.Always)]
-        public required DateTime Timestamp { get; set; }
+        public DateTime Timestamp { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/EndpointOut.cs b/csharp/Svix/Models/EndpointOut.cs
index 4af3549af..4044d8f91 100644
--- a/csharp/Svix/Models/EndpointOut.cs
+++ b/csharp/Svix/Models/EndpointOut.cs
@@ -10,10 +10,10 @@ public class EndpointOut
         public List<string>? Channels { get; set; } = null;
 
         [JsonProperty("createdAt", Required = Required.Always)]
-        public required DateTime CreatedAt { get; set; }
+        public DateTime CreatedAt { get; set; }
 
         [JsonProperty("description", Required = Required.Always)]
-        public required string Description { get; set; }
+        public string Description { get; set; }
 
         [JsonProperty("disabled")]
         public bool? Disabled { get; set; } = null;
@@ -22,10 +22,10 @@ public class EndpointOut
         public List<string>? FilterTypes { get; set; } = null;
 
         [JsonProperty("id", Required = Required.Always)]
-        public required string Id { get; set; }
+        public string Id { get; set; }
 
         [JsonProperty("metadata", Required = Required.Always)]
-        public required Dictionary<string, string> Metadata { get; set; }
+        public Dictionary<string, string> Metadata { get; set; }
 
         [JsonProperty("rateLimit")]
         public ushort? RateLimit { get; set; } = null;
@@ -34,13 +34,13 @@ public class EndpointOut
         public string? Uid { get; set; } = null;
 
         [JsonProperty("updatedAt", Required = Required.Always)]
-        public required DateTime UpdatedAt { get; set; }
+        public DateTime UpdatedAt { get; set; }
 
         [JsonProperty("url", Required = Required.Always)]
-        public required string Url { get; set; }
+        public string Url { get; set; }
 
         [JsonProperty("version", Required = Required.Always)]
-        public required int Version { get; set; }
+        public int Version { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/EndpointSecretOut.cs b/csharp/Svix/Models/EndpointSecretOut.cs
index dfbebfff1..a73186167 100644
--- a/csharp/Svix/Models/EndpointSecretOut.cs
+++ b/csharp/Svix/Models/EndpointSecretOut.cs
@@ -7,7 +7,7 @@ namespace Svix.Models
     public class EndpointSecretOut
     {
         [JsonProperty("key", Required = Required.Always)]
-        public required string Key { get; set; }
+        public string Key { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/EndpointStats.cs b/csharp/Svix/Models/EndpointStats.cs
index 2b944a992..42978df14 100644
--- a/csharp/Svix/Models/EndpointStats.cs
+++ b/csharp/Svix/Models/EndpointStats.cs
@@ -7,16 +7,16 @@ namespace Svix.Models
     public class EndpointStats
     {
         [JsonProperty("fail", Required = Required.Always)]
-        public required long Fail { get; set; }
+        public long Fail { get; set; }
 
         [JsonProperty("pending", Required = Required.Always)]
-        public required long Pending { get; set; }
+        public long Pending { get; set; }
 
         [JsonProperty("sending", Required = Required.Always)]
-        public required long Sending { get; set; }
+        public long Sending { get; set; }
 
         [JsonProperty("success", Required = Required.Always)]
-        public required long Success { get; set; }
+        public long Success { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/EndpointUpdate.cs b/csharp/Svix/Models/EndpointUpdate.cs
index 36fd18d8f..f0168313d 100644
--- a/csharp/Svix/Models/EndpointUpdate.cs
+++ b/csharp/Svix/Models/EndpointUpdate.cs
@@ -28,7 +28,7 @@ public class EndpointUpdate
         public string? Uid { get; set; } = null;
 
         [JsonProperty("url", Required = Required.Always)]
-        public required string Url { get; set; }
+        public string Url { get; set; }
 
         [JsonProperty("version")]
         public ushort? Version { get; set; } = null;
diff --git a/csharp/Svix/Models/EndpointUpdatedEvent.cs b/csharp/Svix/Models/EndpointUpdatedEvent.cs
index d7646dc84..49b523fe0 100644
--- a/csharp/Svix/Models/EndpointUpdatedEvent.cs
+++ b/csharp/Svix/Models/EndpointUpdatedEvent.cs
@@ -11,10 +11,10 @@ namespace Svix.Models
     public class EndpointUpdatedEvent
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required EndpointUpdatedEventData Data { get; set; }
+        public EndpointUpdatedEventData Data { get; set; }
 
         [JsonProperty("type", Required = Required.Always)]
-        public required string Type { get; set; }
+        public string Type { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/EndpointUpdatedEventData.cs b/csharp/Svix/Models/EndpointUpdatedEventData.cs
index 8b49fbd5a..d86628238 100644
--- a/csharp/Svix/Models/EndpointUpdatedEventData.cs
+++ b/csharp/Svix/Models/EndpointUpdatedEventData.cs
@@ -11,13 +11,13 @@ namespace Svix.Models
     public class EndpointUpdatedEventData
     {
         [JsonProperty("appId", Required = Required.Always)]
-        public required string AppId { get; set; }
+        public string AppId { get; set; }
 
         [JsonProperty("appUid")]
         public string? AppUid { get; set; } = null;
 
         [JsonProperty("endpointId", Required = Required.Always)]
-        public required string EndpointId { get; set; }
+        public string EndpointId { get; set; }
 
         [JsonProperty("endpointUid")]
         public string? EndpointUid { get; set; } = null;
diff --git a/csharp/Svix/Models/EnvironmentOut.cs b/csharp/Svix/Models/EnvironmentOut.cs
index f88a68ecb..4cc95a690 100644
--- a/csharp/Svix/Models/EnvironmentOut.cs
+++ b/csharp/Svix/Models/EnvironmentOut.cs
@@ -7,16 +7,16 @@ namespace Svix.Models
     public class EnvironmentOut
     {
         [JsonProperty("createdAt", Required = Required.Always)]
-        public required DateTime CreatedAt { get; set; }
+        public DateTime CreatedAt { get; set; }
 
         [JsonProperty("eventTypes", Required = Required.Always)]
-        public required List<EventTypeOut> EventTypes { get; set; }
+        public List<EventTypeOut> EventTypes { get; set; }
 
         [JsonProperty("settings")]
         public Object? Settings { get; set; } = null;
 
         [JsonProperty("transformationTemplates", Required = Required.Always)]
-        public required List<ConnectorOut> TransformationTemplates { get; set; }
+        public List<ConnectorOut> TransformationTemplates { get; set; }
 
         [JsonProperty("version")]
         public long? Version { get; set; } = null;
diff --git a/csharp/Svix/Models/EventExampleIn.cs b/csharp/Svix/Models/EventExampleIn.cs
index 16df7c6ac..dbf5943be 100644
--- a/csharp/Svix/Models/EventExampleIn.cs
+++ b/csharp/Svix/Models/EventExampleIn.cs
@@ -7,7 +7,7 @@ namespace Svix.Models
     public class EventExampleIn
     {
         [JsonProperty("eventType", Required = Required.Always)]
-        public required string EventType { get; set; }
+        public string EventType { get; set; }
 
         [JsonProperty("exampleIndex")]
         public ulong? ExampleIndex { get; set; } = null;
diff --git a/csharp/Svix/Models/EventTypeFromOpenApi.cs b/csharp/Svix/Models/EventTypeFromOpenApi.cs
index b6d86b796..5f85e207b 100644
--- a/csharp/Svix/Models/EventTypeFromOpenApi.cs
+++ b/csharp/Svix/Models/EventTypeFromOpenApi.cs
@@ -7,10 +7,10 @@ namespace Svix.Models
     public class EventTypeFromOpenApi
     {
         [JsonProperty("deprecated", Required = Required.Always)]
-        public required bool Deprecated { get; set; }
+        public bool Deprecated { get; set; }
 
         [JsonProperty("description", Required = Required.Always)]
-        public required string Description { get; set; }
+        public string Description { get; set; }
 
         [JsonProperty("featureFlag")]
         public string? FeatureFlag { get; set; } = null;
@@ -19,7 +19,7 @@ public class EventTypeFromOpenApi
         public string? GroupName { get; set; } = null;
 
         [JsonProperty("name", Required = Required.Always)]
-        public required string Name { get; set; }
+        public string Name { get; set; }
 
         [JsonProperty("schemas")]
         public Object? Schemas { get; set; } = null;
diff --git a/csharp/Svix/Models/EventTypeImportOpenApiOut.cs b/csharp/Svix/Models/EventTypeImportOpenApiOut.cs
index d01ae9142..19eec655c 100644
--- a/csharp/Svix/Models/EventTypeImportOpenApiOut.cs
+++ b/csharp/Svix/Models/EventTypeImportOpenApiOut.cs
@@ -7,7 +7,7 @@ namespace Svix.Models
     public class EventTypeImportOpenApiOut
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required EventTypeImportOpenApiOutData Data { get; set; }
+        public EventTypeImportOpenApiOutData Data { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/EventTypeImportOpenApiOutData.cs b/csharp/Svix/Models/EventTypeImportOpenApiOutData.cs
index 00a3582ac..4a98f5d08 100644
--- a/csharp/Svix/Models/EventTypeImportOpenApiOutData.cs
+++ b/csharp/Svix/Models/EventTypeImportOpenApiOutData.cs
@@ -7,7 +7,7 @@ namespace Svix.Models
     public class EventTypeImportOpenApiOutData
     {
         [JsonProperty("modified", Required = Required.Always)]
-        public required List<string> Modified { get; set; }
+        public List<string> Modified { get; set; }
 
         [JsonProperty("to_modify")]
         public List<EventTypeFromOpenApi>? ToModify { get; set; } = null;
diff --git a/csharp/Svix/Models/EventTypeIn.cs b/csharp/Svix/Models/EventTypeIn.cs
index 898d336f0..32c063395 100644
--- a/csharp/Svix/Models/EventTypeIn.cs
+++ b/csharp/Svix/Models/EventTypeIn.cs
@@ -13,7 +13,7 @@ public class EventTypeIn
         public bool? Deprecated { get; set; } = null;
 
         [JsonProperty("description", Required = Required.Always)]
-        public required string Description { get; set; }
+        public string Description { get; set; }
 
         [JsonProperty("featureFlag")]
         public string? FeatureFlag { get; set; } = null;
@@ -22,7 +22,7 @@ public class EventTypeIn
         public string? GroupName { get; set; } = null;
 
         [JsonProperty("name", Required = Required.Always)]
-        public required string Name { get; set; }
+        public string Name { get; set; }
 
         [JsonProperty("schemas")]
         public Object? Schemas { get; set; } = null;
diff --git a/csharp/Svix/Models/EventTypeOut.cs b/csharp/Svix/Models/EventTypeOut.cs
index 030e278e9..d367cc323 100644
--- a/csharp/Svix/Models/EventTypeOut.cs
+++ b/csharp/Svix/Models/EventTypeOut.cs
@@ -10,13 +10,13 @@ public class EventTypeOut
         public bool? Archived { get; set; } = null;
 
         [JsonProperty("createdAt", Required = Required.Always)]
-        public required DateTime CreatedAt { get; set; }
+        public DateTime CreatedAt { get; set; }
 
         [JsonProperty("deprecated", Required = Required.Always)]
-        public required bool Deprecated { get; set; }
+        public bool Deprecated { get; set; }
 
         [JsonProperty("description", Required = Required.Always)]
-        public required string Description { get; set; }
+        public string Description { get; set; }
 
         [JsonProperty("featureFlag")]
         public string? FeatureFlag { get; set; } = null;
@@ -25,13 +25,13 @@ public class EventTypeOut
         public string? GroupName { get; set; } = null;
 
         [JsonProperty("name", Required = Required.Always)]
-        public required string Name { get; set; }
+        public string Name { get; set; }
 
         [JsonProperty("schemas")]
         public Object? Schemas { get; set; } = null;
 
         [JsonProperty("updatedAt", Required = Required.Always)]
-        public required DateTime UpdatedAt { get; set; }
+        public DateTime UpdatedAt { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/EventTypeUpdate.cs b/csharp/Svix/Models/EventTypeUpdate.cs
index fc41fb97e..d6eb07388 100644
--- a/csharp/Svix/Models/EventTypeUpdate.cs
+++ b/csharp/Svix/Models/EventTypeUpdate.cs
@@ -13,7 +13,7 @@ public class EventTypeUpdate
         public bool? Deprecated { get; set; } = null;
 
         [JsonProperty("description", Required = Required.Always)]
-        public required string Description { get; set; }
+        public string Description { get; set; }
 
         [JsonProperty("featureFlag")]
         public string? FeatureFlag { get; set; } = null;
diff --git a/csharp/Svix/Models/ExpungeAllContentsOut.cs b/csharp/Svix/Models/ExpungeAllContentsOut.cs
index c914f047c..1116b6dfa 100644
--- a/csharp/Svix/Models/ExpungeAllContentsOut.cs
+++ b/csharp/Svix/Models/ExpungeAllContentsOut.cs
@@ -7,13 +7,13 @@ namespace Svix.Models
     public class ExpungeAllContentsOut
     {
         [JsonProperty("id", Required = Required.Always)]
-        public required string Id { get; set; }
+        public string Id { get; set; }
 
         [JsonProperty("status", Required = Required.Always)]
-        public required BackgroundTaskStatus Status { get; set; }
+        public BackgroundTaskStatus Status { get; set; }
 
         [JsonProperty("task", Required = Required.Always)]
-        public required BackgroundTaskType Task { get; set; }
+        public BackgroundTaskType Task { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/IngestEndpointHeadersIn.cs b/csharp/Svix/Models/IngestEndpointHeadersIn.cs
index 86018a9f4..5e8ffa851 100644
--- a/csharp/Svix/Models/IngestEndpointHeadersIn.cs
+++ b/csharp/Svix/Models/IngestEndpointHeadersIn.cs
@@ -7,7 +7,7 @@ namespace Svix.Models
     public class IngestEndpointHeadersIn
     {
         [JsonProperty("headers", Required = Required.Always)]
-        public required Dictionary<string, string> Headers { get; set; }
+        public Dictionary<string, string> Headers { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/IngestEndpointHeadersOut.cs b/csharp/Svix/Models/IngestEndpointHeadersOut.cs
index 847c45620..c325ae812 100644
--- a/csharp/Svix/Models/IngestEndpointHeadersOut.cs
+++ b/csharp/Svix/Models/IngestEndpointHeadersOut.cs
@@ -7,10 +7,10 @@ namespace Svix.Models
     public class IngestEndpointHeadersOut
     {
         [JsonProperty("headers", Required = Required.Always)]
-        public required Dictionary<string, string> Headers { get; set; }
+        public Dictionary<string, string> Headers { get; set; }
 
         [JsonProperty("sensitive", Required = Required.Always)]
-        public required List<string> Sensitive { get; set; }
+        public List<string> Sensitive { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/IngestEndpointIn.cs b/csharp/Svix/Models/IngestEndpointIn.cs
index 8deefc660..fb57b02e9 100644
--- a/csharp/Svix/Models/IngestEndpointIn.cs
+++ b/csharp/Svix/Models/IngestEndpointIn.cs
@@ -25,7 +25,7 @@ public class IngestEndpointIn
         public string? Uid { get; set; } = null;
 
         [JsonProperty("url", Required = Required.Always)]
-        public required string Url { get; set; }
+        public string Url { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/IngestEndpointOut.cs b/csharp/Svix/Models/IngestEndpointOut.cs
index bbf1869d6..0e7cc6f37 100644
--- a/csharp/Svix/Models/IngestEndpointOut.cs
+++ b/csharp/Svix/Models/IngestEndpointOut.cs
@@ -7,19 +7,19 @@ namespace Svix.Models
     public class IngestEndpointOut
     {
         [JsonProperty("createdAt", Required = Required.Always)]
-        public required DateTime CreatedAt { get; set; }
+        public DateTime CreatedAt { get; set; }
 
         [JsonProperty("description", Required = Required.Always)]
-        public required string Description { get; set; }
+        public string Description { get; set; }
 
         [JsonProperty("disabled")]
         public bool? Disabled { get; set; } = null;
 
         [JsonProperty("id", Required = Required.Always)]
-        public required string Id { get; set; }
+        public string Id { get; set; }
 
         [JsonProperty("metadata", Required = Required.Always)]
-        public required Dictionary<string, string> Metadata { get; set; }
+        public Dictionary<string, string> Metadata { get; set; }
 
         [JsonProperty("rateLimit")]
         public ushort? RateLimit { get; set; } = null;
@@ -28,10 +28,10 @@ public class IngestEndpointOut
         public string? Uid { get; set; } = null;
 
         [JsonProperty("updatedAt", Required = Required.Always)]
-        public required DateTime UpdatedAt { get; set; }
+        public DateTime UpdatedAt { get; set; }
 
         [JsonProperty("url", Required = Required.Always)]
-        public required string Url { get; set; }
+        public string Url { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/IngestEndpointSecretOut.cs b/csharp/Svix/Models/IngestEndpointSecretOut.cs
index 0acafa0bd..6b71fc951 100644
--- a/csharp/Svix/Models/IngestEndpointSecretOut.cs
+++ b/csharp/Svix/Models/IngestEndpointSecretOut.cs
@@ -7,7 +7,7 @@ namespace Svix.Models
     public class IngestEndpointSecretOut
     {
         [JsonProperty("key", Required = Required.Always)]
-        public required string Key { get; set; }
+        public string Key { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/IngestEndpointUpdate.cs b/csharp/Svix/Models/IngestEndpointUpdate.cs
index 123150675..cc88fccf3 100644
--- a/csharp/Svix/Models/IngestEndpointUpdate.cs
+++ b/csharp/Svix/Models/IngestEndpointUpdate.cs
@@ -22,7 +22,7 @@ public class IngestEndpointUpdate
         public string? Uid { get; set; } = null;
 
         [JsonProperty("url", Required = Required.Always)]
-        public required string Url { get; set; }
+        public string Url { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/IngestSourceIn.cs b/csharp/Svix/Models/IngestSourceIn.cs
index 030359629..47b5777b3 100644
--- a/csharp/Svix/Models/IngestSourceIn.cs
+++ b/csharp/Svix/Models/IngestSourceIn.cs
@@ -10,13 +10,13 @@ namespace Svix.Models
     public class IngestSourceIn
     {
         [JsonProperty("name", Required = Required.Always)]
-        public required string Name { get; set; }
+        public string Name { get; set; }
 
         [JsonProperty("uid")]
         public string? Uid { get; set; } = null;
 
         [JsonIgnore]
-        public required IngestSourceInConfig Config { get; set; }
+        public IngestSourceInConfig Config { get; set; }
 
         [JsonProperty("type")]
         private string Type => Config.GetDiscriminator();
@@ -400,16 +400,16 @@ Action<ZoomConfig> onZoom
     internal class IngestSourceInSurrogate
     {
         [JsonProperty("name", Required = Required.Always)]
-        public required string Name { get; set; }
+        public string Name { get; set; }
 
         [JsonProperty("uid")]
         public string? Uid { get; set; } = null;
 
         [JsonProperty("type", Required = Required.Always)]
-        public required string Type { get; set; }
+        public string Type { get; set; }
 
         [JsonProperty("config", Required = Required.Always)]
-        public required JObject Config { get; set; }
+        public JObject Config { get; set; }
     }
 
     public class IngestSourceInConverter : JsonConverter
diff --git a/csharp/Svix/Models/IngestSourceOut.cs b/csharp/Svix/Models/IngestSourceOut.cs
index 9b83d12e7..3c09c52df 100644
--- a/csharp/Svix/Models/IngestSourceOut.cs
+++ b/csharp/Svix/Models/IngestSourceOut.cs
@@ -10,25 +10,25 @@ namespace Svix.Models
     public class IngestSourceOut
     {
         [JsonProperty("createdAt", Required = Required.Always)]
-        public required DateTime CreatedAt { get; set; }
+        public DateTime CreatedAt { get; set; }
 
         [JsonProperty("id", Required = Required.Always)]
-        public required string Id { get; set; }
+        public string Id { get; set; }
 
         [JsonProperty("ingestUrl")]
         public string? IngestUrl { get; set; } = null;
 
         [JsonProperty("name", Required = Required.Always)]
-        public required string Name { get; set; }
+        public string Name { get; set; }
 
         [JsonProperty("uid")]
         public string? Uid { get; set; } = null;
 
         [JsonProperty("updatedAt", Required = Required.Always)]
-        public required DateTime UpdatedAt { get; set; }
+        public DateTime UpdatedAt { get; set; }
 
         [JsonIgnore]
-        public required IngestSourceOutConfig Config { get; set; }
+        public IngestSourceOutConfig Config { get; set; }
 
         [JsonProperty("type")]
         private string Type => Config.GetDiscriminator();
@@ -416,28 +416,28 @@ Action<ZoomConfigOut> onZoom
     internal class IngestSourceOutSurrogate
     {
         [JsonProperty("createdAt", Required = Required.Always)]
-        public required DateTime CreatedAt { get; set; }
+        public DateTime CreatedAt { get; set; }
 
         [JsonProperty("id", Required = Required.Always)]
-        public required string Id { get; set; }
+        public string Id { get; set; }
 
         [JsonProperty("ingestUrl")]
         public string? IngestUrl { get; set; } = null;
 
         [JsonProperty("name", Required = Required.Always)]
-        public required string Name { get; set; }
+        public string Name { get; set; }
 
         [JsonProperty("uid")]
         public string? Uid { get; set; } = null;
 
         [JsonProperty("updatedAt", Required = Required.Always)]
-        public required DateTime UpdatedAt { get; set; }
+        public DateTime UpdatedAt { get; set; }
 
         [JsonProperty("type", Required = Required.Always)]
-        public required string Type { get; set; }
+        public string Type { get; set; }
 
         [JsonProperty("config", Required = Required.Always)]
-        public required JObject Config { get; set; }
+        public JObject Config { get; set; }
     }
 
     public class IngestSourceOutConverter : JsonConverter
diff --git a/csharp/Svix/Models/IntegrationIn.cs b/csharp/Svix/Models/IntegrationIn.cs
index f383913c0..4011f6923 100644
--- a/csharp/Svix/Models/IntegrationIn.cs
+++ b/csharp/Svix/Models/IntegrationIn.cs
@@ -10,7 +10,7 @@ public class IntegrationIn
         public List<string>? FeatureFlags { get; set; } = null;
 
         [JsonProperty("name", Required = Required.Always)]
-        public required string Name { get; set; }
+        public string Name { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/IntegrationKeyOut.cs b/csharp/Svix/Models/IntegrationKeyOut.cs
index 2019b2aed..96828a1bb 100644
--- a/csharp/Svix/Models/IntegrationKeyOut.cs
+++ b/csharp/Svix/Models/IntegrationKeyOut.cs
@@ -7,7 +7,7 @@ namespace Svix.Models
     public class IntegrationKeyOut
     {
         [JsonProperty("key", Required = Required.Always)]
-        public required string Key { get; set; }
+        public string Key { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/IntegrationOut.cs b/csharp/Svix/Models/IntegrationOut.cs
index cff13c65b..6bc78ebf7 100644
--- a/csharp/Svix/Models/IntegrationOut.cs
+++ b/csharp/Svix/Models/IntegrationOut.cs
@@ -7,19 +7,19 @@ namespace Svix.Models
     public class IntegrationOut
     {
         [JsonProperty("createdAt", Required = Required.Always)]
-        public required DateTime CreatedAt { get; set; }
+        public DateTime CreatedAt { get; set; }
 
         [JsonProperty("featureFlags")]
         public List<string>? FeatureFlags { get; set; } = null;
 
         [JsonProperty("id", Required = Required.Always)]
-        public required string Id { get; set; }
+        public string Id { get; set; }
 
         [JsonProperty("name", Required = Required.Always)]
-        public required string Name { get; set; }
+        public string Name { get; set; }
 
         [JsonProperty("updatedAt", Required = Required.Always)]
-        public required DateTime UpdatedAt { get; set; }
+        public DateTime UpdatedAt { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/IntegrationUpdate.cs b/csharp/Svix/Models/IntegrationUpdate.cs
index 17b717e1e..8c57b68e1 100644
--- a/csharp/Svix/Models/IntegrationUpdate.cs
+++ b/csharp/Svix/Models/IntegrationUpdate.cs
@@ -10,7 +10,7 @@ public class IntegrationUpdate
         public List<string>? FeatureFlags { get; set; } = null;
 
         [JsonProperty("name", Required = Required.Always)]
-        public required string Name { get; set; }
+        public string Name { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/ListResponseApiTokenCensoredOut.cs b/csharp/Svix/Models/ListResponseApiTokenCensoredOut.cs
index 1f7e1cab9..ba1298536 100644
--- a/csharp/Svix/Models/ListResponseApiTokenCensoredOut.cs
+++ b/csharp/Svix/Models/ListResponseApiTokenCensoredOut.cs
@@ -7,10 +7,10 @@ namespace Svix.Models
     public class ListResponseApiTokenCensoredOut
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required List<ApiTokenCensoredOut> Data { get; set; }
+        public List<ApiTokenCensoredOut> Data { get; set; }
 
         [JsonProperty("done", Required = Required.Always)]
-        public required bool Done { get; set; }
+        public bool Done { get; set; }
 
         [JsonProperty("iterator")]
         public string? Iterator { get; set; } = null;
diff --git a/csharp/Svix/Models/ListResponseApplicationOut.cs b/csharp/Svix/Models/ListResponseApplicationOut.cs
index d9b5082e7..8fec625d0 100644
--- a/csharp/Svix/Models/ListResponseApplicationOut.cs
+++ b/csharp/Svix/Models/ListResponseApplicationOut.cs
@@ -7,10 +7,10 @@ namespace Svix.Models
     public class ListResponseApplicationOut
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required List<ApplicationOut> Data { get; set; }
+        public List<ApplicationOut> Data { get; set; }
 
         [JsonProperty("done", Required = Required.Always)]
-        public required bool Done { get; set; }
+        public bool Done { get; set; }
 
         [JsonProperty("iterator")]
         public string? Iterator { get; set; } = null;
diff --git a/csharp/Svix/Models/ListResponseBackgroundTaskOut.cs b/csharp/Svix/Models/ListResponseBackgroundTaskOut.cs
index 5e2d3fc41..fa20136f8 100644
--- a/csharp/Svix/Models/ListResponseBackgroundTaskOut.cs
+++ b/csharp/Svix/Models/ListResponseBackgroundTaskOut.cs
@@ -7,10 +7,10 @@ namespace Svix.Models
     public class ListResponseBackgroundTaskOut
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required List<BackgroundTaskOut> Data { get; set; }
+        public List<BackgroundTaskOut> Data { get; set; }
 
         [JsonProperty("done", Required = Required.Always)]
-        public required bool Done { get; set; }
+        public bool Done { get; set; }
 
         [JsonProperty("iterator")]
         public string? Iterator { get; set; } = null;
diff --git a/csharp/Svix/Models/ListResponseEndpointMessageOut.cs b/csharp/Svix/Models/ListResponseEndpointMessageOut.cs
index fa9e3a75c..775f0b46e 100644
--- a/csharp/Svix/Models/ListResponseEndpointMessageOut.cs
+++ b/csharp/Svix/Models/ListResponseEndpointMessageOut.cs
@@ -7,10 +7,10 @@ namespace Svix.Models
     public class ListResponseEndpointMessageOut
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required List<EndpointMessageOut> Data { get; set; }
+        public List<EndpointMessageOut> Data { get; set; }
 
         [JsonProperty("done", Required = Required.Always)]
-        public required bool Done { get; set; }
+        public bool Done { get; set; }
 
         [JsonProperty("iterator")]
         public string? Iterator { get; set; } = null;
diff --git a/csharp/Svix/Models/ListResponseEndpointOut.cs b/csharp/Svix/Models/ListResponseEndpointOut.cs
index 32f832116..50820a886 100644
--- a/csharp/Svix/Models/ListResponseEndpointOut.cs
+++ b/csharp/Svix/Models/ListResponseEndpointOut.cs
@@ -7,10 +7,10 @@ namespace Svix.Models
     public class ListResponseEndpointOut
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required List<EndpointOut> Data { get; set; }
+        public List<EndpointOut> Data { get; set; }
 
         [JsonProperty("done", Required = Required.Always)]
-        public required bool Done { get; set; }
+        public bool Done { get; set; }
 
         [JsonProperty("iterator")]
         public string? Iterator { get; set; } = null;
diff --git a/csharp/Svix/Models/ListResponseEventTypeOut.cs b/csharp/Svix/Models/ListResponseEventTypeOut.cs
index f0c099d18..d0eff8ae9 100644
--- a/csharp/Svix/Models/ListResponseEventTypeOut.cs
+++ b/csharp/Svix/Models/ListResponseEventTypeOut.cs
@@ -7,10 +7,10 @@ namespace Svix.Models
     public class ListResponseEventTypeOut
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required List<EventTypeOut> Data { get; set; }
+        public List<EventTypeOut> Data { get; set; }
 
         [JsonProperty("done", Required = Required.Always)]
-        public required bool Done { get; set; }
+        public bool Done { get; set; }
 
         [JsonProperty("iterator")]
         public string? Iterator { get; set; } = null;
diff --git a/csharp/Svix/Models/ListResponseIngestEndpointOut.cs b/csharp/Svix/Models/ListResponseIngestEndpointOut.cs
index e3abb323e..1786063a8 100644
--- a/csharp/Svix/Models/ListResponseIngestEndpointOut.cs
+++ b/csharp/Svix/Models/ListResponseIngestEndpointOut.cs
@@ -7,10 +7,10 @@ namespace Svix.Models
     public class ListResponseIngestEndpointOut
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required List<IngestEndpointOut> Data { get; set; }
+        public List<IngestEndpointOut> Data { get; set; }
 
         [JsonProperty("done", Required = Required.Always)]
-        public required bool Done { get; set; }
+        public bool Done { get; set; }
 
         [JsonProperty("iterator")]
         public string? Iterator { get; set; } = null;
diff --git a/csharp/Svix/Models/ListResponseIngestSourceOut.cs b/csharp/Svix/Models/ListResponseIngestSourceOut.cs
index 98fd83e67..d9665929b 100644
--- a/csharp/Svix/Models/ListResponseIngestSourceOut.cs
+++ b/csharp/Svix/Models/ListResponseIngestSourceOut.cs
@@ -7,10 +7,10 @@ namespace Svix.Models
     public class ListResponseIngestSourceOut
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required List<IngestSourceOut> Data { get; set; }
+        public List<IngestSourceOut> Data { get; set; }
 
         [JsonProperty("done", Required = Required.Always)]
-        public required bool Done { get; set; }
+        public bool Done { get; set; }
 
         [JsonProperty("iterator")]
         public string? Iterator { get; set; } = null;
diff --git a/csharp/Svix/Models/ListResponseIntegrationOut.cs b/csharp/Svix/Models/ListResponseIntegrationOut.cs
index ca1c10dd3..434033c85 100644
--- a/csharp/Svix/Models/ListResponseIntegrationOut.cs
+++ b/csharp/Svix/Models/ListResponseIntegrationOut.cs
@@ -7,10 +7,10 @@ namespace Svix.Models
     public class ListResponseIntegrationOut
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required List<IntegrationOut> Data { get; set; }
+        public List<IntegrationOut> Data { get; set; }
 
         [JsonProperty("done", Required = Required.Always)]
-        public required bool Done { get; set; }
+        public bool Done { get; set; }
 
         [JsonProperty("iterator")]
         public string? Iterator { get; set; } = null;
diff --git a/csharp/Svix/Models/ListResponseMessageAttemptOut.cs b/csharp/Svix/Models/ListResponseMessageAttemptOut.cs
index 4f0d59774..da3f5c296 100644
--- a/csharp/Svix/Models/ListResponseMessageAttemptOut.cs
+++ b/csharp/Svix/Models/ListResponseMessageAttemptOut.cs
@@ -7,10 +7,10 @@ namespace Svix.Models
     public class ListResponseMessageAttemptOut
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required List<MessageAttemptOut> Data { get; set; }
+        public List<MessageAttemptOut> Data { get; set; }
 
         [JsonProperty("done", Required = Required.Always)]
-        public required bool Done { get; set; }
+        public bool Done { get; set; }
 
         [JsonProperty("iterator")]
         public string? Iterator { get; set; } = null;
diff --git a/csharp/Svix/Models/ListResponseMessageEndpointOut.cs b/csharp/Svix/Models/ListResponseMessageEndpointOut.cs
index 69f13cac5..cf652f6d2 100644
--- a/csharp/Svix/Models/ListResponseMessageEndpointOut.cs
+++ b/csharp/Svix/Models/ListResponseMessageEndpointOut.cs
@@ -7,10 +7,10 @@ namespace Svix.Models
     public class ListResponseMessageEndpointOut
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required List<MessageEndpointOut> Data { get; set; }
+        public List<MessageEndpointOut> Data { get; set; }
 
         [JsonProperty("done", Required = Required.Always)]
-        public required bool Done { get; set; }
+        public bool Done { get; set; }
 
         [JsonProperty("iterator")]
         public string? Iterator { get; set; } = null;
diff --git a/csharp/Svix/Models/ListResponseMessageOut.cs b/csharp/Svix/Models/ListResponseMessageOut.cs
index 490dd14c6..223f72be8 100644
--- a/csharp/Svix/Models/ListResponseMessageOut.cs
+++ b/csharp/Svix/Models/ListResponseMessageOut.cs
@@ -7,10 +7,10 @@ namespace Svix.Models
     public class ListResponseMessageOut
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required List<MessageOut> Data { get; set; }
+        public List<MessageOut> Data { get; set; }
 
         [JsonProperty("done", Required = Required.Always)]
-        public required bool Done { get; set; }
+        public bool Done { get; set; }
 
         [JsonProperty("iterator")]
         public string? Iterator { get; set; } = null;
diff --git a/csharp/Svix/Models/ListResponseOperationalWebhookEndpointOut.cs b/csharp/Svix/Models/ListResponseOperationalWebhookEndpointOut.cs
index 3ca1eda5b..9bae481ca 100644
--- a/csharp/Svix/Models/ListResponseOperationalWebhookEndpointOut.cs
+++ b/csharp/Svix/Models/ListResponseOperationalWebhookEndpointOut.cs
@@ -7,10 +7,10 @@ namespace Svix.Models
     public class ListResponseOperationalWebhookEndpointOut
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required List<OperationalWebhookEndpointOut> Data { get; set; }
+        public List<OperationalWebhookEndpointOut> Data { get; set; }
 
         [JsonProperty("done", Required = Required.Always)]
-        public required bool Done { get; set; }
+        public bool Done { get; set; }
 
         [JsonProperty("iterator")]
         public string? Iterator { get; set; } = null;
diff --git a/csharp/Svix/Models/MessageAttemptExhaustedEvent.cs b/csharp/Svix/Models/MessageAttemptExhaustedEvent.cs
index 1bbf3bf83..a7d7a0e37 100644
--- a/csharp/Svix/Models/MessageAttemptExhaustedEvent.cs
+++ b/csharp/Svix/Models/MessageAttemptExhaustedEvent.cs
@@ -11,10 +11,10 @@ namespace Svix.Models
     public class MessageAttemptExhaustedEvent
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required MessageAttemptExhaustedEventData Data { get; set; }
+        public MessageAttemptExhaustedEventData Data { get; set; }
 
         [JsonProperty("type", Required = Required.Always)]
-        public required string Type { get; set; }
+        public string Type { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/MessageAttemptExhaustedEventData.cs b/csharp/Svix/Models/MessageAttemptExhaustedEventData.cs
index 23f24e2e9..582c911c2 100644
--- a/csharp/Svix/Models/MessageAttemptExhaustedEventData.cs
+++ b/csharp/Svix/Models/MessageAttemptExhaustedEventData.cs
@@ -11,22 +11,22 @@ namespace Svix.Models
     public class MessageAttemptExhaustedEventData
     {
         [JsonProperty("appId", Required = Required.Always)]
-        public required string AppId { get; set; }
+        public string AppId { get; set; }
 
         [JsonProperty("appUid")]
         public string? AppUid { get; set; } = null;
 
         [JsonProperty("endpointId", Required = Required.Always)]
-        public required string EndpointId { get; set; }
+        public string EndpointId { get; set; }
 
         [JsonProperty("lastAttempt", Required = Required.Always)]
-        public required MessageAttemptFailedData LastAttempt { get; set; }
+        public MessageAttemptFailedData LastAttempt { get; set; }
 
         [JsonProperty("msgEventId")]
         public string? MsgEventId { get; set; } = null;
 
         [JsonProperty("msgId", Required = Required.Always)]
-        public required string MsgId { get; set; }
+        public string MsgId { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/MessageAttemptFailedData.cs b/csharp/Svix/Models/MessageAttemptFailedData.cs
index 53a0b79cb..45319e84c 100644
--- a/csharp/Svix/Models/MessageAttemptFailedData.cs
+++ b/csharp/Svix/Models/MessageAttemptFailedData.cs
@@ -7,13 +7,13 @@ namespace Svix.Models
     public class MessageAttemptFailedData
     {
         [JsonProperty("id", Required = Required.Always)]
-        public required string Id { get; set; }
+        public string Id { get; set; }
 
         [JsonProperty("responseStatusCode", Required = Required.Always)]
-        public required short ResponseStatusCode { get; set; }
+        public short ResponseStatusCode { get; set; }
 
         [JsonProperty("timestamp", Required = Required.Always)]
-        public required DateTime Timestamp { get; set; }
+        public DateTime Timestamp { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/MessageAttemptFailingEvent.cs b/csharp/Svix/Models/MessageAttemptFailingEvent.cs
index fcd9ebce2..99ab7a8bc 100644
--- a/csharp/Svix/Models/MessageAttemptFailingEvent.cs
+++ b/csharp/Svix/Models/MessageAttemptFailingEvent.cs
@@ -12,10 +12,10 @@ namespace Svix.Models
     public class MessageAttemptFailingEvent
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required MessageAttemptFailingEventData Data { get; set; }
+        public MessageAttemptFailingEventData Data { get; set; }
 
         [JsonProperty("type", Required = Required.Always)]
-        public required string Type { get; set; }
+        public string Type { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/MessageAttemptFailingEventData.cs b/csharp/Svix/Models/MessageAttemptFailingEventData.cs
index 8a505bbf1..79eaa1c6d 100644
--- a/csharp/Svix/Models/MessageAttemptFailingEventData.cs
+++ b/csharp/Svix/Models/MessageAttemptFailingEventData.cs
@@ -11,22 +11,22 @@ namespace Svix.Models
     public class MessageAttemptFailingEventData
     {
         [JsonProperty("appId", Required = Required.Always)]
-        public required string AppId { get; set; }
+        public string AppId { get; set; }
 
         [JsonProperty("appUid")]
         public string? AppUid { get; set; } = null;
 
         [JsonProperty("endpointId", Required = Required.Always)]
-        public required string EndpointId { get; set; }
+        public string EndpointId { get; set; }
 
         [JsonProperty("lastAttempt", Required = Required.Always)]
-        public required MessageAttemptFailedData LastAttempt { get; set; }
+        public MessageAttemptFailedData LastAttempt { get; set; }
 
         [JsonProperty("msgEventId")]
         public string? MsgEventId { get; set; } = null;
 
         [JsonProperty("msgId", Required = Required.Always)]
-        public required string MsgId { get; set; }
+        public string MsgId { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/MessageAttemptOut.cs b/csharp/Svix/Models/MessageAttemptOut.cs
index 342254916..7633507ea 100644
--- a/csharp/Svix/Models/MessageAttemptOut.cs
+++ b/csharp/Svix/Models/MessageAttemptOut.cs
@@ -7,37 +7,37 @@ namespace Svix.Models
     public class MessageAttemptOut
     {
         [JsonProperty("endpointId", Required = Required.Always)]
-        public required string EndpointId { get; set; }
+        public string EndpointId { get; set; }
 
         [JsonProperty("id", Required = Required.Always)]
-        public required string Id { get; set; }
+        public string Id { get; set; }
 
         [JsonProperty("msg")]
         public MessageOut? Msg { get; set; } = null;
 
         [JsonProperty("msgId", Required = Required.Always)]
-        public required string MsgId { get; set; }
+        public string MsgId { get; set; }
 
         [JsonProperty("response", Required = Required.Always)]
-        public required string Response { get; set; }
+        public string Response { get; set; }
 
         [JsonProperty("responseDurationMs", Required = Required.Always)]
-        public required long ResponseDurationMs { get; set; }
+        public long ResponseDurationMs { get; set; }
 
         [JsonProperty("responseStatusCode", Required = Required.Always)]
-        public required short ResponseStatusCode { get; set; }
+        public short ResponseStatusCode { get; set; }
 
         [JsonProperty("status", Required = Required.Always)]
-        public required MessageStatus Status { get; set; }
+        public MessageStatus Status { get; set; }
 
         [JsonProperty("timestamp", Required = Required.Always)]
-        public required DateTime Timestamp { get; set; }
+        public DateTime Timestamp { get; set; }
 
         [JsonProperty("triggerType", Required = Required.Always)]
-        public required MessageAttemptTriggerType TriggerType { get; set; }
+        public MessageAttemptTriggerType TriggerType { get; set; }
 
         [JsonProperty("url", Required = Required.Always)]
-        public required string Url { get; set; }
+        public string Url { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/MessageAttemptRecoveredEvent.cs b/csharp/Svix/Models/MessageAttemptRecoveredEvent.cs
index 3939ad9bc..d7d3074a3 100644
--- a/csharp/Svix/Models/MessageAttemptRecoveredEvent.cs
+++ b/csharp/Svix/Models/MessageAttemptRecoveredEvent.cs
@@ -11,10 +11,10 @@ namespace Svix.Models
     public class MessageAttemptRecoveredEvent
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required MessageAttemptRecoveredEventData Data { get; set; }
+        public MessageAttemptRecoveredEventData Data { get; set; }
 
         [JsonProperty("type", Required = Required.Always)]
-        public required string Type { get; set; }
+        public string Type { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/MessageAttemptRecoveredEventData.cs b/csharp/Svix/Models/MessageAttemptRecoveredEventData.cs
index 050c453a9..453be611b 100644
--- a/csharp/Svix/Models/MessageAttemptRecoveredEventData.cs
+++ b/csharp/Svix/Models/MessageAttemptRecoveredEventData.cs
@@ -11,22 +11,22 @@ namespace Svix.Models
     public class MessageAttemptRecoveredEventData
     {
         [JsonProperty("appId", Required = Required.Always)]
-        public required string AppId { get; set; }
+        public string AppId { get; set; }
 
         [JsonProperty("appUid")]
         public string? AppUid { get; set; } = null;
 
         [JsonProperty("endpointId", Required = Required.Always)]
-        public required string EndpointId { get; set; }
+        public string EndpointId { get; set; }
 
         [JsonProperty("lastAttempt", Required = Required.Always)]
-        public required MessageAttemptFailedData LastAttempt { get; set; }
+        public MessageAttemptFailedData LastAttempt { get; set; }
 
         [JsonProperty("msgEventId")]
         public string? MsgEventId { get; set; } = null;
 
         [JsonProperty("msgId", Required = Required.Always)]
-        public required string MsgId { get; set; }
+        public string MsgId { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/MessageEndpointOut.cs b/csharp/Svix/Models/MessageEndpointOut.cs
index 52e82267e..e6e2a6690 100644
--- a/csharp/Svix/Models/MessageEndpointOut.cs
+++ b/csharp/Svix/Models/MessageEndpointOut.cs
@@ -10,10 +10,10 @@ public class MessageEndpointOut
         public List<string>? Channels { get; set; } = null;
 
         [JsonProperty("createdAt", Required = Required.Always)]
-        public required DateTime CreatedAt { get; set; }
+        public DateTime CreatedAt { get; set; }
 
         [JsonProperty("description", Required = Required.Always)]
-        public required string Description { get; set; }
+        public string Description { get; set; }
 
         [JsonProperty("disabled")]
         public bool? Disabled { get; set; } = null;
@@ -22,7 +22,7 @@ public class MessageEndpointOut
         public List<string>? FilterTypes { get; set; } = null;
 
         [JsonProperty("id", Required = Required.Always)]
-        public required string Id { get; set; }
+        public string Id { get; set; }
 
         [JsonProperty("nextAttempt")]
         public DateTime? NextAttempt { get; set; } = null;
@@ -31,19 +31,19 @@ public class MessageEndpointOut
         public ushort? RateLimit { get; set; } = null;
 
         [JsonProperty("status", Required = Required.Always)]
-        public required MessageStatus Status { get; set; }
+        public MessageStatus Status { get; set; }
 
         [JsonProperty("uid")]
         public string? Uid { get; set; } = null;
 
         [JsonProperty("updatedAt", Required = Required.Always)]
-        public required DateTime UpdatedAt { get; set; }
+        public DateTime UpdatedAt { get; set; }
 
         [JsonProperty("url", Required = Required.Always)]
-        public required string Url { get; set; }
+        public string Url { get; set; }
 
         [JsonProperty("version", Required = Required.Always)]
-        public required int Version { get; set; }
+        public int Version { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/MessageIn.cs b/csharp/Svix/Models/MessageIn.cs
index a2940f00f..9091a4814 100644
--- a/csharp/Svix/Models/MessageIn.cs
+++ b/csharp/Svix/Models/MessageIn.cs
@@ -16,10 +16,10 @@ public class MessageIn
         public string? EventId { get; set; } = null;
 
         [JsonProperty("eventType", Required = Required.Always)]
-        public required string EventType { get; set; }
+        public string EventType { get; set; }
 
         [JsonProperty("payload", Required = Required.Always)]
-        public required Object Payload { get; set; }
+        public Object Payload { get; set; }
 
         [JsonProperty("payloadRetentionHours")]
         public long? PayloadRetentionHours { get; set; } = null;
diff --git a/csharp/Svix/Models/MessageOut.cs b/csharp/Svix/Models/MessageOut.cs
index d4f06a0a7..baac5de16 100644
--- a/csharp/Svix/Models/MessageOut.cs
+++ b/csharp/Svix/Models/MessageOut.cs
@@ -13,19 +13,19 @@ public class MessageOut
         public string? EventId { get; set; } = null;
 
         [JsonProperty("eventType", Required = Required.Always)]
-        public required string EventType { get; set; }
+        public string EventType { get; set; }
 
         [JsonProperty("id", Required = Required.Always)]
-        public required string Id { get; set; }
+        public string Id { get; set; }
 
         [JsonProperty("payload", Required = Required.Always)]
-        public required Object Payload { get; set; }
+        public Object Payload { get; set; }
 
         [JsonProperty("tags")]
         public List<string>? Tags { get; set; } = null;
 
         [JsonProperty("timestamp", Required = Required.Always)]
-        public required DateTime Timestamp { get; set; }
+        public DateTime Timestamp { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/OperationalWebhookEndpointHeadersIn.cs b/csharp/Svix/Models/OperationalWebhookEndpointHeadersIn.cs
index 09902c980..adfe4620f 100644
--- a/csharp/Svix/Models/OperationalWebhookEndpointHeadersIn.cs
+++ b/csharp/Svix/Models/OperationalWebhookEndpointHeadersIn.cs
@@ -7,7 +7,7 @@ namespace Svix.Models
     public class OperationalWebhookEndpointHeadersIn
     {
         [JsonProperty("headers", Required = Required.Always)]
-        public required Dictionary<string, string> Headers { get; set; }
+        public Dictionary<string, string> Headers { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/OperationalWebhookEndpointHeadersOut.cs b/csharp/Svix/Models/OperationalWebhookEndpointHeadersOut.cs
index ffcfd0376..98756b2bb 100644
--- a/csharp/Svix/Models/OperationalWebhookEndpointHeadersOut.cs
+++ b/csharp/Svix/Models/OperationalWebhookEndpointHeadersOut.cs
@@ -7,10 +7,10 @@ namespace Svix.Models
     public class OperationalWebhookEndpointHeadersOut
     {
         [JsonProperty("headers", Required = Required.Always)]
-        public required Dictionary<string, string> Headers { get; set; }
+        public Dictionary<string, string> Headers { get; set; }
 
         [JsonProperty("sensitive", Required = Required.Always)]
-        public required List<string> Sensitive { get; set; }
+        public List<string> Sensitive { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/OperationalWebhookEndpointIn.cs b/csharp/Svix/Models/OperationalWebhookEndpointIn.cs
index 51546b22f..60aad8120 100644
--- a/csharp/Svix/Models/OperationalWebhookEndpointIn.cs
+++ b/csharp/Svix/Models/OperationalWebhookEndpointIn.cs
@@ -28,7 +28,7 @@ public class OperationalWebhookEndpointIn
         public string? Uid { get; set; } = null;
 
         [JsonProperty("url", Required = Required.Always)]
-        public required string Url { get; set; }
+        public string Url { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/OperationalWebhookEndpointOut.cs b/csharp/Svix/Models/OperationalWebhookEndpointOut.cs
index 7cb2a3f4b..0478e8157 100644
--- a/csharp/Svix/Models/OperationalWebhookEndpointOut.cs
+++ b/csharp/Svix/Models/OperationalWebhookEndpointOut.cs
@@ -7,10 +7,10 @@ namespace Svix.Models
     public class OperationalWebhookEndpointOut
     {
         [JsonProperty("createdAt", Required = Required.Always)]
-        public required DateTime CreatedAt { get; set; }
+        public DateTime CreatedAt { get; set; }
 
         [JsonProperty("description", Required = Required.Always)]
-        public required string Description { get; set; }
+        public string Description { get; set; }
 
         [JsonProperty("disabled")]
         public bool? Disabled { get; set; } = null;
@@ -19,10 +19,10 @@ public class OperationalWebhookEndpointOut
         public List<string>? FilterTypes { get; set; } = null;
 
         [JsonProperty("id", Required = Required.Always)]
-        public required string Id { get; set; }
+        public string Id { get; set; }
 
         [JsonProperty("metadata", Required = Required.Always)]
-        public required Dictionary<string, string> Metadata { get; set; }
+        public Dictionary<string, string> Metadata { get; set; }
 
         [JsonProperty("rateLimit")]
         public ushort? RateLimit { get; set; } = null;
@@ -31,10 +31,10 @@ public class OperationalWebhookEndpointOut
         public string? Uid { get; set; } = null;
 
         [JsonProperty("updatedAt", Required = Required.Always)]
-        public required DateTime UpdatedAt { get; set; }
+        public DateTime UpdatedAt { get; set; }
 
         [JsonProperty("url", Required = Required.Always)]
-        public required string Url { get; set; }
+        public string Url { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/OperationalWebhookEndpointSecretOut.cs b/csharp/Svix/Models/OperationalWebhookEndpointSecretOut.cs
index d6cd309f1..0e516ef8f 100644
--- a/csharp/Svix/Models/OperationalWebhookEndpointSecretOut.cs
+++ b/csharp/Svix/Models/OperationalWebhookEndpointSecretOut.cs
@@ -7,7 +7,7 @@ namespace Svix.Models
     public class OperationalWebhookEndpointSecretOut
     {
         [JsonProperty("key", Required = Required.Always)]
-        public required string Key { get; set; }
+        public string Key { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/OperationalWebhookEndpointUpdate.cs b/csharp/Svix/Models/OperationalWebhookEndpointUpdate.cs
index 74b6fc0a2..7a661e198 100644
--- a/csharp/Svix/Models/OperationalWebhookEndpointUpdate.cs
+++ b/csharp/Svix/Models/OperationalWebhookEndpointUpdate.cs
@@ -25,7 +25,7 @@ public class OperationalWebhookEndpointUpdate
         public string? Uid { get; set; } = null;
 
         [JsonProperty("url", Required = Required.Always)]
-        public required string Url { get; set; }
+        public string Url { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/PollingEndpointConsumerSeekIn.cs b/csharp/Svix/Models/PollingEndpointConsumerSeekIn.cs
index 51943d110..5834c038e 100644
--- a/csharp/Svix/Models/PollingEndpointConsumerSeekIn.cs
+++ b/csharp/Svix/Models/PollingEndpointConsumerSeekIn.cs
@@ -7,7 +7,7 @@ namespace Svix.Models
     public class PollingEndpointConsumerSeekIn
     {
         [JsonProperty("after", Required = Required.Always)]
-        public required DateTime After { get; set; }
+        public DateTime After { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/PollingEndpointConsumerSeekOut.cs b/csharp/Svix/Models/PollingEndpointConsumerSeekOut.cs
index ef4120ec3..892272438 100644
--- a/csharp/Svix/Models/PollingEndpointConsumerSeekOut.cs
+++ b/csharp/Svix/Models/PollingEndpointConsumerSeekOut.cs
@@ -7,7 +7,7 @@ namespace Svix.Models
     public class PollingEndpointConsumerSeekOut
     {
         [JsonProperty("iterator", Required = Required.Always)]
-        public required string Iterator { get; set; }
+        public string Iterator { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/PollingEndpointMessageOut.cs b/csharp/Svix/Models/PollingEndpointMessageOut.cs
index 7f4d77555..d0e788720 100644
--- a/csharp/Svix/Models/PollingEndpointMessageOut.cs
+++ b/csharp/Svix/Models/PollingEndpointMessageOut.cs
@@ -17,22 +17,22 @@ public class PollingEndpointMessageOut
         public string? EventId { get; set; } = null;
 
         [JsonProperty("eventType", Required = Required.Always)]
-        public required string EventType { get; set; }
+        public string EventType { get; set; }
 
         [JsonProperty("headers")]
         public Dictionary<string, string>? Headers { get; set; } = null;
 
         [JsonProperty("id", Required = Required.Always)]
-        public required string Id { get; set; }
+        public string Id { get; set; }
 
         [JsonProperty("payload", Required = Required.Always)]
-        public required Object Payload { get; set; }
+        public Object Payload { get; set; }
 
         [JsonProperty("tags")]
         public List<string>? Tags { get; set; } = null;
 
         [JsonProperty("timestamp", Required = Required.Always)]
-        public required DateTime Timestamp { get; set; }
+        public DateTime Timestamp { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/PollingEndpointOut.cs b/csharp/Svix/Models/PollingEndpointOut.cs
index cc0678c27..f39dcb7d1 100644
--- a/csharp/Svix/Models/PollingEndpointOut.cs
+++ b/csharp/Svix/Models/PollingEndpointOut.cs
@@ -7,13 +7,13 @@ namespace Svix.Models
     public class PollingEndpointOut
     {
         [JsonProperty("data", Required = Required.Always)]
-        public required List<PollingEndpointMessageOut> Data { get; set; }
+        public List<PollingEndpointMessageOut> Data { get; set; }
 
         [JsonProperty("done", Required = Required.Always)]
-        public required bool Done { get; set; }
+        public bool Done { get; set; }
 
         [JsonProperty("iterator", Required = Required.Always)]
-        public required string Iterator { get; set; }
+        public string Iterator { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/RecoverIn.cs b/csharp/Svix/Models/RecoverIn.cs
index 3d39ea727..3417e82da 100644
--- a/csharp/Svix/Models/RecoverIn.cs
+++ b/csharp/Svix/Models/RecoverIn.cs
@@ -7,7 +7,7 @@ namespace Svix.Models
     public class RecoverIn
     {
         [JsonProperty("since", Required = Required.Always)]
-        public required DateTime Since { get; set; }
+        public DateTime Since { get; set; }
 
         [JsonProperty("until")]
         public DateTime? Until { get; set; } = null;
diff --git a/csharp/Svix/Models/RecoverOut.cs b/csharp/Svix/Models/RecoverOut.cs
index d1878b3a5..739180d88 100644
--- a/csharp/Svix/Models/RecoverOut.cs
+++ b/csharp/Svix/Models/RecoverOut.cs
@@ -7,13 +7,13 @@ namespace Svix.Models
     public class RecoverOut
     {
         [JsonProperty("id", Required = Required.Always)]
-        public required string Id { get; set; }
+        public string Id { get; set; }
 
         [JsonProperty("status", Required = Required.Always)]
-        public required BackgroundTaskStatus Status { get; set; }
+        public BackgroundTaskStatus Status { get; set; }
 
         [JsonProperty("task", Required = Required.Always)]
-        public required BackgroundTaskType Task { get; set; }
+        public BackgroundTaskType Task { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/ReplayIn.cs b/csharp/Svix/Models/ReplayIn.cs
index f9d9aee5c..8227c8858 100644
--- a/csharp/Svix/Models/ReplayIn.cs
+++ b/csharp/Svix/Models/ReplayIn.cs
@@ -7,7 +7,7 @@ namespace Svix.Models
     public class ReplayIn
     {
         [JsonProperty("since", Required = Required.Always)]
-        public required DateTime Since { get; set; }
+        public DateTime Since { get; set; }
 
         [JsonProperty("until")]
         public DateTime? Until { get; set; } = null;
diff --git a/csharp/Svix/Models/ReplayOut.cs b/csharp/Svix/Models/ReplayOut.cs
index d8ba66f78..dc4f3841a 100644
--- a/csharp/Svix/Models/ReplayOut.cs
+++ b/csharp/Svix/Models/ReplayOut.cs
@@ -7,13 +7,13 @@ namespace Svix.Models
     public class ReplayOut
     {
         [JsonProperty("id", Required = Required.Always)]
-        public required string Id { get; set; }
+        public string Id { get; set; }
 
         [JsonProperty("status", Required = Required.Always)]
-        public required BackgroundTaskStatus Status { get; set; }
+        public BackgroundTaskStatus Status { get; set; }
 
         [JsonProperty("task", Required = Required.Always)]
-        public required BackgroundTaskType Task { get; set; }
+        public BackgroundTaskType Task { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/RotateTokenOut.cs b/csharp/Svix/Models/RotateTokenOut.cs
index 8789fcd7e..9f73b4eeb 100644
--- a/csharp/Svix/Models/RotateTokenOut.cs
+++ b/csharp/Svix/Models/RotateTokenOut.cs
@@ -7,7 +7,7 @@ namespace Svix.Models
     public class RotateTokenOut
     {
         [JsonProperty("ingestUrl", Required = Required.Always)]
-        public required string IngestUrl { get; set; }
+        public string IngestUrl { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/ShopifyConfig.cs b/csharp/Svix/Models/ShopifyConfig.cs
index 8116ff211..f76dec61d 100644
--- a/csharp/Svix/Models/ShopifyConfig.cs
+++ b/csharp/Svix/Models/ShopifyConfig.cs
@@ -7,7 +7,7 @@ namespace Svix.Models
     public class ShopifyConfig
     {
         [JsonProperty("secret", Required = Required.Always)]
-        public required string Secret { get; set; }
+        public string Secret { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/SlackConfig.cs b/csharp/Svix/Models/SlackConfig.cs
index 5b9daf614..c11a8a8e3 100644
--- a/csharp/Svix/Models/SlackConfig.cs
+++ b/csharp/Svix/Models/SlackConfig.cs
@@ -7,7 +7,7 @@ namespace Svix.Models
     public class SlackConfig
     {
         [JsonProperty("secret", Required = Required.Always)]
-        public required string Secret { get; set; }
+        public string Secret { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/StripeConfig.cs b/csharp/Svix/Models/StripeConfig.cs
index 92f72d6bb..cc97ef3b7 100644
--- a/csharp/Svix/Models/StripeConfig.cs
+++ b/csharp/Svix/Models/StripeConfig.cs
@@ -7,7 +7,7 @@ namespace Svix.Models
     public class StripeConfig
     {
         [JsonProperty("secret", Required = Required.Always)]
-        public required string Secret { get; set; }
+        public string Secret { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/SvixConfig.cs b/csharp/Svix/Models/SvixConfig.cs
index 06a5aeb0a..f8e91cfb4 100644
--- a/csharp/Svix/Models/SvixConfig.cs
+++ b/csharp/Svix/Models/SvixConfig.cs
@@ -7,7 +7,7 @@ namespace Svix.Models
     public class SvixConfig
     {
         [JsonProperty("secret", Required = Required.Always)]
-        public required string Secret { get; set; }
+        public string Secret { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Models/TemplateOut.cs b/csharp/Svix/Models/TemplateOut.cs
deleted file mode 100644
index 0d5be17e0..000000000
--- a/csharp/Svix/Models/TemplateOut.cs
+++ /dev/null
@@ -1,70 +0,0 @@
-// this file is @generated
-using System.Text;
-using Newtonsoft.Json;
-
-namespace Svix.Models
-{
-    public class TemplateOut
-    {
-        [JsonProperty("createdAt", Required = Required.Always)]
-        public required DateTime CreatedAt { get; set; }
-
-        [JsonProperty("description", Required = Required.Always)]
-        public required string Description { get; set; }
-
-        [JsonProperty("featureFlag")]
-        public string? FeatureFlag { get; set; } = null;
-
-        [JsonProperty("filterTypes")]
-        public List<string>? FilterTypes { get; set; } = null;
-
-        [JsonProperty("id", Required = Required.Always)]
-        public required string Id { get; set; }
-
-        [JsonProperty("instructions", Required = Required.Always)]
-        public required string Instructions { get; set; }
-
-        [JsonProperty("instructionsLink")]
-        public string? InstructionsLink { get; set; } = null;
-
-        [JsonProperty("kind", Required = Required.Always)]
-        public required ConnectorKind Kind { get; set; }
-
-        [JsonProperty("logo", Required = Required.Always)]
-        public required string Logo { get; set; }
-
-        [JsonProperty("name", Required = Required.Always)]
-        public required string Name { get; set; }
-
-        [JsonProperty("orgId", Required = Required.Always)]
-        public required string OrgId { get; set; }
-
-        [JsonProperty("transformation", Required = Required.Always)]
-        public required string Transformation { get; set; }
-
-        [JsonProperty("updatedAt", Required = Required.Always)]
-        public required DateTime UpdatedAt { get; set; }
-
-        public override string ToString()
-        {
-            StringBuilder sb = new StringBuilder();
-
-            sb.Append("class TemplateOut {\n");
-            sb.Append("  CreatedAt: ").Append(CreatedAt).Append('\n');
-            sb.Append("  Description: ").Append(Description).Append('\n');
-            sb.Append("  FeatureFlag: ").Append(FeatureFlag).Append('\n');
-            sb.Append("  FilterTypes: ").Append(FilterTypes).Append('\n');
-            sb.Append("  Id: ").Append(Id).Append('\n');
-            sb.Append("  Instructions: ").Append(Instructions).Append('\n');
-            sb.Append("  InstructionsLink: ").Append(InstructionsLink).Append('\n');
-            sb.Append("  Kind: ").Append(Kind).Append('\n');
-            sb.Append("  Logo: ").Append(Logo).Append('\n');
-            sb.Append("  Name: ").Append(Name).Append('\n');
-            sb.Append("  OrgId: ").Append(OrgId).Append('\n');
-            sb.Append("  Transformation: ").Append(Transformation).Append('\n');
-            sb.Append("  UpdatedAt: ").Append(UpdatedAt).Append('\n');
-            sb.Append("}\n");
-            return sb.ToString();
-        }
-    }
-}
diff --git a/csharp/Svix/Models/ZoomConfig.cs b/csharp/Svix/Models/ZoomConfig.cs
index b48c61f56..f100c5ac3 100644
--- a/csharp/Svix/Models/ZoomConfig.cs
+++ b/csharp/Svix/Models/ZoomConfig.cs
@@ -7,7 +7,7 @@ namespace Svix.Models
     public class ZoomConfig
     {
         [JsonProperty("secret", Required = Required.Always)]
-        public required string Secret { get; set; }
+        public string Secret { get; set; }
 
         public override string ToString()
         {
diff --git a/csharp/Svix/Svix.csproj b/csharp/Svix/Svix.csproj
index 9e9b577d5..5a506ae32 100644
--- a/csharp/Svix/Svix.csproj
+++ b/csharp/Svix/Svix.csproj
@@ -1,11 +1,12 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>netstandard2.0</TargetFramework>
     <PackageId>Svix</PackageId>
     <Version>1.64.1</Version>
     <Authors>Svix</Authors>
     <Company>Svix</Company>
+    <LangVersion>12.0</LangVersion>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
diff --git a/csharp/Svix/Webhook.cs b/csharp/Svix/Webhook.cs
index ab969bfa7..0158c7663 100644
--- a/csharp/Svix/Webhook.cs
+++ b/csharp/Svix/Webhook.cs
@@ -18,7 +18,7 @@ public sealed class Webhook
         internal const string UNBRANDED_SIGNATURE_HEADER_KEY = "webhook-signature";
         internal const string UNBRANDED_TIMESTAMP_HEADER_KEY = "webhook-timestamp";
 
-        private const int SIGNATURE_LENGTH_BYTES = HMACSHA256.HashSizeInBytes;
+        private const int SIGNATURE_LENGTH_BYTES = 32;
         private const int SIGNATURE_LENGTH_BASE64 = 48;
         private const int SIGNATURE_LENGTH_STRING = 56;
         private const int TOLERANCE_IN_SECONDS = 60 * 5;