diff --git a/tox.ini b/tox.ini
index 5fc2f94c..94ff0be7 100644
--- a/tox.ini
+++ b/tox.ini
@@ -44,6 +44,8 @@ commands = {posargs}
 
 [flake8]
 show-source = True
+# H405: multi line docstring summary not separated with an empty line
+# W504 line break after binary operator
 ignore = H405,W504
 exclude=.venv,.git,.tox,dist,doc,*lib/python*,*egg,build,__init__.py