diff --git a/src/auth/src/supabase_auth/types.py b/src/auth/src/supabase_auth/types.py
index c41319c7..0c3136d9 100644
--- a/src/auth/src/supabase_auth/types.py
+++ b/src/auth/src/supabase_auth/types.py
@@ -102,8 +102,8 @@ class AuthResponse(BaseModel):
 
 
 class AuthOtpResponse(BaseModel):
-    user: None = None
-    session: None = None
+    user: Literal[None] = None
+    session: Literal[None] = None
     message_id: Optional[str] = None