diff --git a/requirements_test.txt b/requirements_test.txt
index 7b9dde1..2334ffa 100644
--- a/requirements_test.txt
+++ b/requirements_test.txt
@@ -7,4 +7,4 @@ pytest-asyncio
 requests_mock
 aiohttp
 aioresponses
-tox==4.8.0
+tox==4.9.0