diff --git a/.flake8 b/.flake8
index 786115bcb0af119a500067bac8df1d9b4073b8a1..f4cc20cdb9b463d730f1b33406c3ab41de5d367a 100644
--- a/.flake8
+++ b/.flake8
@@ -3,4 +3,4 @@ max-line-length=120
 exclude=pystencils/jupyter.py,
         pystencils/plot.py
         pystencils/session.py
-ignore = W293 W503 W291
+ignore = W293 W503 W291 C901