diff --git a/requirements_dev.txt b/requirements_dev.txt
index 5024386..2d31e91 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,7 +1,7 @@
 bumpversion==0.5.3
 wheel==0.40.0
 flake8
-tox==3.25.1
+tox==4.12.1
 coverage==7.2.7
 Sphinx==1.6.3
 PyYAML>=4.2b1