diff --git a/misc/requirements/requirements-tox.txt b/misc/requirements/requirements-tox.txt
index 33dec30aa..76e7c1ff2 100644
--- a/misc/requirements/requirements-tox.txt
+++ b/misc/requirements/requirements-tox.txt
@@ -2,5 +2,5 @@
 
 pluggy==0.5.2
 py==1.4.34
-tox==2.8.2
+tox==2.9.1
 virtualenv==15.1.0