diff --git a/setup.cfg b/setup.cfg
index 7e56a65..77f2fcd 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -95,7 +95,7 @@ formats = bdist_wheel
 [flake8]
 # Some sane defaults for the code style checker flake8
 max_line_length = 130
-extend_ignore = E203, W503
+extend_ignore = E203, W503, E401
 # ^  Black-compatible
 #    E203 and W503 have edge cases handled by black
 exclude =