diff --git a/tox.ini b/tox.ini
index 3b7bbe93..99c9797a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -45,7 +45,8 @@ passenv = OS_*
 # D102: Missing docstring in public method
 # D103: Missing docstring in public function
 # D104: Missing docstring in public package
-ignore = D100,D101,D102,D103,D104
+# D203: 1 blank line required before class docstring (deprecated in pep257)
+ignore = D100,D101,D102,D103,D104,D203
 show-source = True
 exclude = .venv,.tox,dist,doc,*egg,build