diff --git a/package.json b/package.json
index 14985fe6e..a01011b3f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@nicolas-chaulet/openapi-typescript-codegen",
-    "version": "0.27.2",
+    "version": "0.27.3",
     "description": "Library that generates Typescript clients based on the OpenAPI specification.",
     "author": "Ferdi Koomen",
     "homepage": "https://github.com/CanoaPBC/openapi-typescript-codegen",
diff --git a/test/__snapshots__/index.spec.ts.snap b/test/__snapshots__/index.spec.ts.snap
index d86e8a7ac..4ff639127 100644
--- a/test/__snapshots__/index.spec.ts.snap
+++ b/test/__snapshots__/index.spec.ts.snap
@@ -4565,7 +4565,9 @@ exports[`v3 should generate: test/generated/v3/models/FreeFormObjectWithAddition
 /**
  * This is a free-form object with additionalProperties: true.
  */
-export type FreeFormObjectWithAdditionalPropertiesEqTrue = Record<string, any>;
+export type FreeFormObjectWithAdditionalPropertiesEqTrue = {
+    foo?: string;  
+} & Record<string, any>;
 "
 `;
 
diff --git a/test/spec/v3.json b/test/spec/v3.json
index c901a6526..346f1a7b0 100644
--- a/test/spec/v3.json
+++ b/test/spec/v3.json
@@ -2712,7 +2712,12 @@
             "FreeFormObjectWithAdditionalPropertiesEqTrue": {
                 "description": "This is a free-form object with additionalProperties: true.",
                 "type": "object",
-                "additionalProperties": true
+                "additionalProperties": true,
+                "properties": {
+                    "foo": {
+                        "type": "string"
+                    }
+                }
             },
             "FreeFormObjectWithAdditionalPropertiesEqEmptyObject": {
                 "description": "This is a free-form object with additionalProperties: {}.",