diff --git a/tox.ini b/tox.ini
index 1d18c4f1..b001b947 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,4 +1,6 @@
 [tox]
+requires = virtualenv<20.22.0
+
 env_list =
     py{36,37,38,39,310,311,312,313,314}
     lint