diff --git a/Lib/importlib/metadata/__init__.py b/Lib/importlib/metadata/__init__.py
index 40ab1a1aaac328..5c8811422d0afa 100644
--- a/Lib/importlib/metadata/__init__.py
+++ b/Lib/importlib/metadata/__init__.py
@@ -341,7 +341,7 @@ def __repr__(self):
         return f'<FileHash mode: {self.mode} value: {self.value}>'
 
 
-class Distribution:
+class Distribution(metaclass=abc.ABCMeta):
     """A Python distribution package."""
 
     @abc.abstractmethod