diff --git a/requirements.txt b/requirements.txt
index 43100434..73e90f9a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,5 +7,5 @@ binaryornot==0.4.0
 pytest==3.0.3
 pep8==1.7.0
 pyflakes==1.3.0
-tox==2.3.1
+tox==2.4.1
 pytest-cookies==0.2.0