diff --git a/tox.ini b/tox.ini
index 433041f..ad49084 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,7 +8,9 @@ commands = python setup.py test
 
 [testenv:flake8]
 basepython=python
-deps=flake8
+deps=
+    flake8
+    flake8_docstrings
 commands=
     flake8 pydiscourse