diff --git a/requirements/tox.txt b/requirements/tox.txt
index a3c590c4d..c67d5f45c 100644
--- a/requirements/tox.txt
+++ b/requirements/tox.txt
@@ -2,4 +2,4 @@
 
 tox==3.14.0;python_version<="2.7"
 tox==3.28.0;python_version<="3.6" and python_version>"2.7"
-tox==4.6.3;python_version>="3.7"
+tox==4.6.4;python_version>="3.7"