diff --git a/setup.cfg b/setup.cfg
index b08ea46d..f5761d54 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -4,7 +4,7 @@ addopts=--tb=native -p no:doctest
 norecursedirs=bin dist docs	htmlcov script hooks node_modules .* {args}
 
 [flake8]
-ignore = F999,E501,E128,E124,E402,W503,E731,F841
+ignore = F999,E501,E128,E124,E402,W503,E731,F841,F405
 max-line-length = 100
 exclude = .tox,.git,*/migrations/*,lemur/static/*,docs/*