--- a/tests/test-ancestor.py	Mon Feb 21 13:03:43 2022 -0700
+++ b/tests/test-ancestor.py	Mon Feb 21 13:08:28 2022 -0700
@@ -62,7 +62,7 @@
     return ancs
 
 
-class naiveincrementalmissingancestors(object):
+class naiveincrementalmissingancestors:
     def __init__(self, ancs, bases):
         self.ancs = ancs
         self.bases = set(bases)