diff --git a/src/auth_middleware.py b/src/auth_middleware.py
index 81248e57..d9f19e8c 100644
--- a/src/auth_middleware.py
+++ b/src/auth_middleware.py
@@ -30,15 +30,8 @@ def require_auth(session_manager):
                 from session_manager import User
                 from datetime import datetime
 
-                request.state.user = User(
-                    user_id="anonymous",
-                    email="anonymous@localhost",
-                    name="Anonymous User",
-                    picture=None,
-                    provider="none",
-                    created_at=datetime.now(),
-                    last_login=datetime.now(),
-                )
+                from session_manager import AnonymousUser
+                request.state.user = AnonymousUser()
                 request.state.jwt_token = None  # No JWT in no-auth mode
                 print(f"[DEBUG] Set user_id=anonymous, jwt_token=None")
                 return await handler(request)
@@ -72,15 +65,8 @@ def optional_auth(session_manager):
                 from session_manager import User
                 from datetime import datetime
 
-                request.state.user = User(
-                    user_id="anonymous",
-                    email="anonymous@localhost",
-                    name="Anonymous User",
-                    picture=None,
-                    provider="none",
-                    created_at=datetime.now(),
-                    last_login=datetime.now(),
-                )
+                from session_manager import AnonymousUser
+                request.state.user = AnonymousUser()
                 request.state.jwt_token = None  # No JWT in no-auth mode
             else:
                 user = get_current_user(request, session_manager)
diff --git a/src/session_manager.py b/src/session_manager.py
index b909c164..0d55acd7 100644
--- a/src/session_manager.py
+++ b/src/session_manager.py
@@ -26,6 +26,19 @@ class User:
         if self.last_login is None:
             self.last_login = datetime.now()
 
+class AnonymousUser(User):
+    """Anonymous user"""
+
+    def __init__(self):
+        super().__init__(
+            user_id="anonymous",
+            email="anonymous@localhost",
+            name="Anonymous User",
+            picture=None,
+            provider="none",
+        )
+
+
 
 class SessionManager:
     """Manages user sessions and JWT tokens"""
@@ -199,14 +212,5 @@ class SessionManager:
 
     def _create_anonymous_jwt(self) -> str:
         """Create JWT token for anonymous user in no-auth mode"""
-        anonymous_user = User(
-            user_id="anonymous",
-            email="anonymous@localhost",
-            name="Anonymous User",
-            picture=None,
-            provider="none",
-            created_at=datetime.now(),
-            last_login=datetime.now(),
-        )
-
+        anonymous_user = AnonymousUser()
         return self.create_jwt_token(anonymous_user)