diff --git a/tox.ini b/tox.ini
index c456915a..26c0e5f4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -12,6 +12,7 @@ envlist =
   py312-django{42,50}
   flake8
   isort
+requires = virtualenv<20.22.0  ; https://tox.wiki/en/latest/faq.html#testing-end-of-life-python-versions
 
 [gh-actions]
 python =