diff --git a/packages/toolbox-adk/src/toolbox_adk/toolset.py b/packages/toolbox-adk/src/toolbox_adk/toolset.py
index c7050a5c..bff41b2d 100644
--- a/packages/toolbox-adk/src/toolbox_adk/toolset.py
+++ b/packages/toolbox-adk/src/toolbox_adk/toolset.py
@@ -138,6 +138,7 @@ async def get_tools(
             for t in tools
         ]
 
+    @override
     async def close(self):
         if self.__client:
             await self.__client.close()