diff --git a/Lib/importlib/metadata/__init__.py b/Lib/importlib/metadata/__init__.py
index 371c4822095..9fd6e04ae9a 100644
--- a/Lib/importlib/metadata/__init__.py
+++ b/Lib/importlib/metadata/__init__.py
@@ -278,6 +278,8 @@ class DeprecatedList(list):
     1
     """
 
+    __slots__ = ()
+
     _warn = functools.partial(
         warnings.warn,
         "EntryPoints list interface is deprecated. Cast to list if needed.",
diff --git a/Lib/test/test_importlib/test_metadata_api.py b/Lib/test/test_importlib/test_metadata_api.py
index e16773a7e87..78287c314ce 100644
--- a/Lib/test/test_importlib/test_metadata_api.py
+++ b/Lib/test/test_importlib/test_metadata_api.py
@@ -172,6 +172,11 @@ def test_entry_points_groups_get(self):
             entry_points().get('entries', 'default') == entry_points()['entries']
             entry_points().get('missing', ()) == ()
 
+    def test_entry_points_allows_no_attributes(self):
+        ep = entry_points().select(group='entries', name='main')
+        with self.assertRaises(AttributeError):
+            ep.foo = 4
+
     def test_metadata_for_this_package(self):
         md = metadata('egginfo-pkg')
         assert md['author'] == 'Steven Ma'
diff --git a/Misc/NEWS.d/next/Library/2022-01-07-13-27-53.bpo-46246.CTLx32.rst b/Misc/NEWS.d/next/Library/2022-01-07-13-27-53.bpo-46246.CTLx32.rst
new file mode 100644
index 00000000000..48501714394
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2022-01-07-13-27-53.bpo-46246.CTLx32.rst
@@ -0,0 +1,2 @@
+Add missing ``__slots__`` to ``importlib.metadata.DeprecatedList``. Patch by
+Arie Bovenberg.