diff --git a/tox.ini b/tox.ini
index cf443a5..419dc81 100644
--- a/tox.ini
+++ b/tox.ini
@@ -47,7 +47,7 @@ commands =
 [flake8]
 max-line-length = 99
 docstring-convention = all
-ignore = D203, D213, W503
+ignore = D203, D213, W503, E231
 docstring_style = sphinx
 
 [darglint]