diff --git a/tox.ini b/tox.ini
index 3c933f5..94deaf7 100644
--- a/tox.ini
+++ b/tox.ini
@@ -26,6 +26,7 @@ commands = {posargs}
 [testenv:lint]
 deps =
     flake8
+    pep8-naming
 commands =
     flake8 .