diff --git a/requirements.txt b/requirements.txt
index 684ec91e0..818640244 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ pre-commit==2.20.0
 
 # Testing
 # ------------------------------------------------------------------------------
-tox==3.27.1
+tox==4.0.0
 pytest==7.2.0
 pytest-cookies==0.6.1
 pytest-instafail==0.4.2