diff --git a/tox.ini b/tox.ini
index b72dc3bf4..e53117d97 100644
--- a/tox.ini
+++ b/tox.ini
@@ -102,7 +102,7 @@ deps =
     -r{toxinidir}/requirements.txt
     py==1.4.28
     pytest==2.7.1
-    mccabe==0.3
+    mccabe==0.3.1
     pytest-mccabe==0.1
 commands =
     {envpython} scripts/link_pyqt.py --tox {envdir}