diff -r 55d132525155 -r 642e31cb55f0 mercurial/interfaces/util.py
--- a/mercurial/interfaces/util.py	Mon Feb 21 13:03:43 2022 -0700
+++ b/mercurial/interfaces/util.py	Mon Feb 21 13:08:28 2022 -0700
@@ -20,11 +20,11 @@
     implementer = zi.implementer
 else:
 
-    class Attribute(object):
+    class Attribute:
         def __init__(self, __name__, __doc__=b''):
             pass
 
-    class Interface(object):
+    class Interface:
         def __init__(
             self, name, bases=(), attrs=None, __doc__=None, __module__=None
         ):