diff --git a/setup.cfg b/setup.cfg
index a91261b..1170e3c 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -3,7 +3,7 @@ profile = black
 
 [flake8]
 max-line-length = 88
-extend-ignore = E203, E741, W503, E731
+extend-ignore = E203, E741, W503, E731, E721
 exclude =.git .idea .*_cache dist venv
 
 [mypy]