diff --git a/mcp_server/pyproject.toml b/mcp_server/pyproject.toml
index bab59fd7..cef71e27 100644
--- a/mcp_server/pyproject.toml
+++ b/mcp_server/pyproject.toml
@@ -10,6 +10,7 @@ dependencies = [
     "graphiti-core[falkordb]>=0.23.0",
     "pydantic-settings>=2.0.0",
     "pyyaml>=6.0",
+    "typing-extensions>=4.0.0",
 ]
 
 [project.optional-dependencies]
diff --git a/mcp_server/src/models/response_types.py b/mcp_server/src/models/response_types.py
index eca20324..16d96bca 100644
--- a/mcp_server/src/models/response_types.py
+++ b/mcp_server/src/models/response_types.py
@@ -1,6 +1,8 @@
 """Response type definitions for Graphiti MCP Server."""
 
-from typing import Any, TypedDict
+from typing import Any
+
+from typing_extensions import TypedDict
 
 
 class ErrorResponse(TypedDict):