diff --git a/src/google/adk/tools/mcp_tool/mcp_toolset.py b/src/google/adk/tools/mcp_tool/mcp_toolset.py
index 3e25812..541ab53 100644
--- a/src/google/adk/tools/mcp_tool/mcp_toolset.py
+++ b/src/google/adk/tools/mcp_tool/mcp_toolset.py
@@ -16,9 +16,10 @@ from contextlib import AsyncExitStack
 import sys
 from typing import List
 from typing import Optional
-from typing import override
 from typing import TextIO
 
+from typing_extensions import override
+
 from ...agents.readonly_context import ReadonlyContext
 from ..base_toolset import BaseToolset
 from ..base_toolset import ToolPredicate