diff --git a/tox.ini b/tox.ini
index e4a6ff017..45634d7e0 100644
--- a/tox.ini
+++ b/tox.ini
@@ -26,7 +26,7 @@ commands = python -m twisted.trial --reporter=text twisted
 
 [testenv:lint]
 basepython=python3.4
-deps = flake8==3.4.1
+deps = flake8==3.5.0
 commands = flake8 --max-complexity 10 h2 test
 
 [testenv:docs]