diff --git a/misskey/users.py b/misskey/users.py
index 7710a06..a3e9a0a 100644
--- a/misskey/users.py
+++ b/misskey/users.py
@@ -120,4 +120,4 @@ def users_notes(
         with_files: bool = False,
         exclude_nsfw: bool = False,
     ) -> List[Note]:
-        pass
+        raise NotImplementedError()