diff --git a/fastapi_cachex/session/middleware.py b/fastapi_cachex/session/middleware.py
index efc9208..983db0b 100644
--- a/fastapi_cachex/session/middleware.py
+++ b/fastapi_cachex/session/middleware.py
@@ -220,14 +220,7 @@ async def dispatch(
         Returns:
             Response
         """
-        # Store session manager in app state for dependency injection (first request only)
-        # This allows developers to use get_session_manager() dependency
-        if not hasattr(request.app.state, "__fastapi_cachex_session_manager"):
-            setattr(
-                request.app.state,
-                "__fastapi_cachex_session_manager",
-                self.session_manager,
-            )
+        _stash_session_manager(request.app, self.session_manager)
 
         # Extract session token from request
         token = self._extract_token(request)