diff --git a/tox.ini b/tox.ini
index f5d86d394..1e4530f07 100644
--- a/tox.ini
+++ b/tox.ini
@@ -51,7 +51,9 @@ commands = bash tools/lintstack.sh
 [testenv:releasenotes]
 commands = sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasenotes/source releasenotes/build/html
 
+#Skip PEP257 violation.
 [flake8]
+ignore = D100,D101,D102,D103,D104,D105,D200,D203,D202,D204,D205,D208,D400,D401
 show-source = true
 builtins = _
 exclude=.venv,.git,.tox,dist,doc,*openstack/common*,*lib/python*,*egg,tools,scripts