diff --git a/modules/openapi-generator/src/main/resources/typescript-node/models.mustache b/modules/openapi-generator/src/main/resources/typescript-node/models.mustache
index 279340121611..b4d7d78dfea7 100644
--- a/modules/openapi-generator/src/main/resources/typescript-node/models.mustache
+++ b/modules/openapi-generator/src/main/resources/typescript-node/models.mustache
@@ -97,7 +97,7 @@ export class ObjectSerializer {
             }
             return transformedData;
         } else if (type === "Date") {
-            return data.toString();
+            return data.toISOString();
         } else {
             if (enumsMap[type]) {
                 return data;
diff --git a/samples/client/petstore/typescript-node/default/model/models.ts b/samples/client/petstore/typescript-node/default/model/models.ts
index 8ed47b194d73..7b0dc89cbf78 100644
--- a/samples/client/petstore/typescript-node/default/model/models.ts
+++ b/samples/client/petstore/typescript-node/default/model/models.ts
@@ -91,7 +91,7 @@ export class ObjectSerializer {
             }
             return transformedData;
         } else if (type === "Date") {
-            return data.toString();
+            return data.toISOString();
         } else {
             if (enumsMap[type]) {
                 return data;
diff --git a/samples/client/petstore/typescript-node/npm/model/models.ts b/samples/client/petstore/typescript-node/npm/model/models.ts
index 8ed47b194d73..7b0dc89cbf78 100644
--- a/samples/client/petstore/typescript-node/npm/model/models.ts
+++ b/samples/client/petstore/typescript-node/npm/model/models.ts
@@ -91,7 +91,7 @@ export class ObjectSerializer {
             }
             return transformedData;
         } else if (type === "Date") {
-            return data.toString();
+            return data.toISOString();
         } else {
             if (enumsMap[type]) {
                 return data;