diff --git a/tox.ini b/tox.ini
index 57be519a..277ae9d3 100644
--- a/tox.ini
+++ b/tox.ini
@@ -30,4 +30,5 @@ commands = sphinx-build -b html -d {envtmpdir}/doctrees . {envtmpdir}/html
 deps =
     flake8
     flake8-import-order
+    pep8-naming
 commands = flake8 --show-source --statistics mopidy tests