diff --git a/requirements_dev.txt b/requirements_dev.txt
index 5c8e481..6265dbb 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,7 +1,7 @@
 bump2version==1.0.1
 wheel==0.37.1
 watchdog==2.1.7
-tox==3.24.5
+tox==4.4.6
 coverage==6.3.2
 Sphinx==4.3.0
 m2r2==0.3.2