diff --git a/.flake8 b/.flake8
index ba7abd11f9c2..a105e9346ea3 100644
--- a/.flake8
+++ b/.flake8
@@ -14,7 +14,7 @@
 #    34 E127 continuation line over-indented for visual indent
 
 [flake8]
-ignore = F401, F811, E127, E128, E301, E302, E305, E501, E701, E704, B303
+ignore = F401, F403, F405, F811, E127, E128, E301, E302, E305, E501, E701, E704, B303
 # We are checking with Python 3 but many of the stubs are Python 2 stubs.
 # A nice future improvement would be to provide separate .flake8
 # configurations for Python 2 and Python 3 files.