diff --git a/tox.ini b/tox.ini
index e8129d4..9a85896 100644
--- a/tox.ini
+++ b/tox.ini
@@ -71,6 +71,6 @@
     flake8 {posargs}
 
 [flake8]
-ignore =
+ignore = E731
 show-source = True
 exclude = .git,.tox,dist,*egg,testing,src/postorius/doc