diff --git a/misc/requirements/requirements-tox.txt b/misc/requirements/requirements-tox.txt
index 7ed4022bb..a3c980b5e 100644
--- a/misc/requirements/requirements-tox.txt
+++ b/misc/requirements/requirements-tox.txt
@@ -4,5 +4,5 @@ pluggy==0.8.0
 py==1.7.0
 six==1.11.0
 toml==0.10.0
-tox==3.5.2
+tox==3.5.3
 virtualenv==16.0.0