diff --git a/requirements-ci.txt b/requirements-ci.txt
index 73a3c9e70..97fc52633 100644
--- a/requirements-ci.txt
+++ b/requirements-ci.txt
@@ -5,7 +5,7 @@ pyflakes>=1.0.0
 coverage==4.2
 sphinx==1.4.8
 alabaster>=0.6.2
-tox==2.4.0
+tox==2.4.1
 sphinxcontrib-newsfeed==0.1.4
 pytest-cov==2.4.0
 pygments==2.1.3