diff --git a/schemas/1.5/dbt_project-1.5.json b/schemas/1.5/dbt_project-1.5.json
index 6014778..1070aac 100644
--- a/schemas/1.5/dbt_project-1.5.json
+++ b/schemas/1.5/dbt_project-1.5.json
@@ -208,8 +208,7 @@
       "additionalProperties": false
     },
     "invalidate_hard_deletes": {
-      "type": "boolean",
-      "description": "Configuration specific to snapshots used to invalidate hard deletes."
+      "$ref": "#/$defs/boolean_or_jinja_string"
     },
     "jinja_string": {
       "type": "string",
diff --git a/schemas/1.6/dbt_project-1.6.json b/schemas/1.6/dbt_project-1.6.json
index a285f85..232aa1e 100644
--- a/schemas/1.6/dbt_project-1.6.json
+++ b/schemas/1.6/dbt_project-1.6.json
@@ -205,8 +205,7 @@
       "additionalProperties": false
     },
     "invalidate_hard_deletes": {
-      "type": "boolean",
-      "description": "Configuration specific to snapshots used to invalidate hard deletes."
+      "$ref": "#/$defs/boolean_or_jinja_string"
     },
     "jinja_string": {
       "type": "string",
diff --git a/schemas/dbt_project.json b/schemas/dbt_project.json
index 1ca488a..e94c8d7 100644
--- a/schemas/dbt_project.json
+++ b/schemas/dbt_project.json
@@ -199,8 +199,7 @@
       "additionalProperties": false
     },
     "invalidate_hard_deletes": {
-      "type": "boolean",
-      "description": "Configuration specific to snapshots used to invalidate hard deletes."
+      "$ref": "#/$defs/boolean_or_jinja_string"
     },
     "jinja_string": {
       "type": "string",