diff --git a/git_review/cmd.py b/git_review/cmd.py
index cac99a5..7f94996 100755
--- a/git_review/cmd.py
+++ b/git_review/cmd.py
@@ -67,7 +67,7 @@ _rewrites = None
 _rewrites_push = None
 
 
-class colors:
+class colors(object):
     yellow = '\033[33m'
     green = '\033[92m'
     reset = '\033[0m'
diff --git a/tox.ini b/tox.ini
index 9ae60dc..59bec38 100644
--- a/tox.ini
+++ b/tox.ini
@@ -27,6 +27,6 @@ commands = python setup.py build_sphinx
 commands = {posargs}
 
 [flake8]
-ignore = E125,H202,H238,H405,H904
+ignore = E125,H202,H405,H904
 show-source = True
 exclude = .venv,.git,.tox,dist,doc,*openstack/common*,*lib/python*,*egg,build