diff --git a/requirements.txt b/requirements.txt
index 29cf7c24e..da008e6f4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ pre-commit==3.3.3
 
 # Testing
 # ------------------------------------------------------------------------------
-tox==4.8.0
+tox==4.9.0
 pytest==7.4.0
 pytest-xdist==3.3.1
 pytest-cookies==0.7.0