moto Integration Fix (api gateway put integration response)
diff --git a/localstack/services/apigateway/apigateway_starter.py b/localstack/services/apigateway/apigateway_starter.py
index bf680b80bb87a..1caae22eb28df 100644
--- a/localstack/services/apigateway/apigateway_starter.py
+++ b/localstack/services/apigateway/apigateway_starter.py
@@ -40,7 +40,7 @@ def apigateway_models_resource_delete_integration(self, method_type):
 
         return {}
 
-    def apigateway_models_IntegrationResponse_init(self, status_code, selection_pattern=None):
+    def apigateway_models_IntegrationResponse_init(self, status_code, selection_pattern=None, response_templates=None):
         self['statusCode'] = status_code
         if selection_pattern:
             self['selectionPattern'] = selection_pattern

moto Integration Fix (api gateway put integration response)