diff --git a/requirements-meta.txt b/requirements-meta.txt
index d6e9f9d7..0ebe9256 100644
--- a/requirements-meta.txt
+++ b/requirements-meta.txt
@@ -1,4 +1,4 @@
-tox>=3.15.2
+tox>=3.15.2,<4.0.0
 tox-pyenv==1.1.0
 tox-gh-actions==1.3.0
 virtualenv>=16.7.10