diff --git a/tox.ini b/tox.ini
index 5269e068..1efdcba7 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,7 +13,7 @@ commands =
   python setup.py testr --slowest --testr-args='{posargs}'
 
 [testenv:pep8]
-deps = hacking<0.12,>=0.11.0
+deps = hacking<0.13,>=0.12
 commands = flake8
 
 [testenv:cover]