diff --git a/tox.ini b/tox.ini
index c588b8d5d..b51497562 100644
--- a/tox.ini
+++ b/tox.ini
@@ -79,7 +79,7 @@ deps =
     -r{toxinidir}/requirements.txt
     py==1.4.28
     pytest==2.7.1
-    pyflakes==0.9.0
+    pyflakes==0.9.1
     pytest-flakes==1.0.0
 commands =
     {envpython} scripts/link_pyqt.py --tox {envdir}