diff --git a/dev_requirements/ci-requirements.txt b/dev_requirements/ci-requirements.txt
index b673eb36..5948f1b7 100644
--- a/dev_requirements/ci-requirements.txt
+++ b/dev_requirements/ci-requirements.txt
@@ -1,2 +1,2 @@
 setuptools
-tox==3.24.5
+tox==4.21.2