diff --git a/brother_ql_web/__init__.py b/brother_ql_web/__init__.py
index de9521f..4cace1f 100644
--- a/brother_ql_web/__init__.py
+++ b/brother_ql_web/__init__.py
@@ -20,7 +20,7 @@ def warn(message: str, *args: Any, **kwargs: Any) -> None:
             return
         original_logger(message, *args, **kwargs)
 
-    logging.getLogger("brother_ql.devicedependent").warn = warn  # type: ignore[assignment,method-assign]  # noqa: E501
+    logging.getLogger("brother_ql.devicedependent").warn = warn  # type: ignore[assignment,method-assign,attr-defined]  # noqa: E501
 
 
 patch_deprecation_warning()