diff --git a/requirements_dev.txt b/requirements_dev.txt
index e0c2b65..48e5f2a 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -5,7 +5,7 @@ watchdog==2.1.6
 flake8==4.0.1
 watchdog==2.1.6
 flake8==3.9.2
-tox==3.24.5
+tox==4.16.0
 coverage==6.3.2
 Sphinx==4.4.0
 twine>=1.12.1