diff --git a/requirements.txt b/requirements.txt
index 0965907..caafbe0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ bumpversion==0.6.0
 wheel==0.43.0
 watchdog==4.0.0
 flake8==7.0.0
-tox==3.20.0
+tox==4.15.0
 coverage==5.3
 twine==3.2.0
 pytest==6.1.1