diff --git a/src/Mapr.DependencyInjection/Mapr.DependencyInjection.csproj b/src/Mapr.DependencyInjection/Mapr.DependencyInjection.csproj
index 3bf5618..be02c90 100644
--- a/src/Mapr.DependencyInjection/Mapr.DependencyInjection.csproj
+++ b/src/Mapr.DependencyInjection/Mapr.DependencyInjection.csproj
@@ -1,7 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFramework>net6.0</TargetFramework>
+        <TargetFrameworks>netstandard2.1;net5.0;net6.0</TargetFrameworks>
+        <LangVersion>latest</LangVersion>
         <Nullable>enable</Nullable>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
     </PropertyGroup>
diff --git a/src/Mapr/Mapr.csproj b/src/Mapr/Mapr.csproj
index 0f9186a..961dcd9 100644
--- a/src/Mapr/Mapr.csproj
+++ b/src/Mapr/Mapr.csproj
@@ -1,7 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFrameworks>netstandard2.1;net5.0;net6.0</TargetFrameworks>
+    <LangVersion>latest</LangVersion>
     <Nullable>enable</Nullable>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
   </PropertyGroup>
diff --git a/tests/Mapr.DependencyInjection.Tests/Mapr.DependencyInjection.Tests.csproj b/tests/Mapr.DependencyInjection.Tests/Mapr.DependencyInjection.Tests.csproj
index e2a3478..e66a172 100644
--- a/tests/Mapr.DependencyInjection.Tests/Mapr.DependencyInjection.Tests.csproj
+++ b/tests/Mapr.DependencyInjection.Tests/Mapr.DependencyInjection.Tests.csproj
@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFramework>net6.0</TargetFramework>
-
+        <TargetFrameworks>netcoreapp3.1;net5.0;net6.0</TargetFrameworks>
+        <LangVersion>latest</LangVersion>
         <IsPackable>false</IsPackable>
     </PropertyGroup>
 
diff --git a/tests/Mapr.Tests/Mapr.Tests.csproj b/tests/Mapr.Tests/Mapr.Tests.csproj
index ac6cc3f..72df432 100644
--- a/tests/Mapr.Tests/Mapr.Tests.csproj
+++ b/tests/Mapr.Tests/Mapr.Tests.csproj
@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
-
+    <TargetFrameworks>netcoreapp3.1;net5.0;net6.0</TargetFrameworks>
+    <LangVersion>latest</LangVersion>
     <IsPackable>false</IsPackable>
 
     <Nullable>enable</Nullable>