diff --git a/modules/openapi-generator/src/main/resources/typescript/model/ObjectSerializer.mustache b/modules/openapi-generator/src/main/resources/typescript/model/ObjectSerializer.mustache
index e208ed076120..d4cc5ce27ed1 100644
--- a/modules/openapi-generator/src/main/resources/typescript/model/ObjectSerializer.mustache
+++ b/modules/openapi-generator/src/main/resources/typescript/model/ObjectSerializer.mustache
@@ -24,6 +24,9 @@ let primitives = [
 
 const supportedMediaTypes: { [mediaType: string]: number } = {
   "application/json": Infinity,
+  "application/json-patch+json": 1,
+  "application/merge-patch+json": 1,
+  "application/strategic-merge-patch+json": 1,
   "application/octet-stream": 0,
   "application/x-www-form-urlencoded": 0
 }
@@ -225,7 +228,7 @@ export class ObjectSerializer {
             return String(data);
         }
 
-        if (mediaType === "application/json") {
+        if (mediaType === "application/json" || mediaType === "application/json-patch+json" || mediaType === "application/merge-patch+json" || mediaType === "application/strategic-merge-patch+json") {
             return JSON.stringify(data);
         }
 
@@ -244,7 +247,7 @@ export class ObjectSerializer {
             return rawData;
         }
 
-        if (mediaType === "application/json") {
+        if (mediaType === "application/json" || mediaType === "application/json-patch+json" || mediaType === "application/merge-patch+json" || mediaType === "application/strategic-merge-patch+json") {
             return JSON.parse(rawData);
         }