diff --git a/types/resources/endpoints.d.ts b/types/resources/endpoints.d.ts
index a7e79d4..da31b5a 100644
--- a/types/resources/endpoints.d.ts
+++ b/types/resources/endpoints.d.ts
@@ -108,7 +108,7 @@ export class EndpointInterface extends PlivoResourceInterface {
      * @promise {object} return {@link Endpoint} object if success
      * @fail {Error} return Error
      */
-    update(id: string, params: object): any;
+    update(id: string, params: object): Promise<UpdateEndpointResponse>;
     /**
      * delete Endpoint
      * @method