--- a/eric6/Utilities/ClassBrowsers/ClbrBaseClasses.py	Fri Apr 09 18:13:36 2021 +0200
+++ b/eric6/Utilities/ClassBrowsers/ClbrBaseClasses.py	Fri Apr 09 18:38:01 2021 +0200
@@ -8,7 +8,7 @@
 """
 
 
-class _ClbrBase(object):
+class _ClbrBase:
     """
     Class implementing the base of all class browser objects.
     """
@@ -153,7 +153,7 @@
         self.classes[name] = _class
 
 
-class ClbrVisibilityMixinBase(object):
+class ClbrVisibilityMixinBase:
     """
     Class implementing the base class of all visibility mixins.
     """