diff --git a/tox.ini b/tox.ini
index 2571d9a..a4f05e0 100644
--- a/tox.ini
+++ b/tox.ini
@@ -12,3 +12,4 @@ deps =
 
 [testenv:flake8]
 commands = flake8 --max-complexity=12 blogtopoid
+deps = flake8