diff --git a/app/runtime/extensions/service.py b/app/runtime/extensions/service.py
index b3ecc40ad..9917e37df 100644
--- a/app/runtime/extensions/service.py
+++ b/app/runtime/extensions/service.py
@@ -1,5 +1,5 @@
 from collections.abc import Callable
-from typing import Any, List, Optional, Type
+from typing import Any, List, Type
 
 from pydantic import ValidationError