diff --git a/tox.ini b/tox.ini
index f0619f7..efea4e6 100644
--- a/tox.ini
+++ b/tox.ini
@@ -76,6 +76,6 @@
 # E123, E125 skipped as they are invalid PEP-8.
 max-line-length = 120
 show-source = True
-ignore = E123,E125,E241
+ignore = E123,E125,E241,W503
 builtins = _
 exclude=.venv,.git,.tox,dist,doc,*lib/python*,*egg,build,devops_stages/*,.rst