diff --git a/importlib_metadata/_meta.py b/importlib_metadata/_meta.py
index d6ba1c30..8621c680 100644
--- a/importlib_metadata/_meta.py
+++ b/importlib_metadata/_meta.py
@@ -21,7 +21,7 @@ def __iter__(self) -> Iterator[str]:
     # overload per python/importlib_metadata#435
     @overload
     def get_all(self, name: str, failobj: None = None) -> Optional[List[Any]]:
-        ...
+        ...  # pragma: no cover
 
     @overload
     def get_all(self, name: str, failobj: _T) -> Union[List[Any], _T]: