diff --git a/setup.cfg b/setup.cfg
index 0733e79..4264473 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -49,6 +49,8 @@ addopts =
 [tox:tox]
 envlist = py36, py37, py38, py39, py310
 skip_missing_interpreters = true
+minversion = 3.2.0
+requires = virtualenv >= 16.1
 
 [gh-actions]
 python =