diff --git a/setup.cfg b/setup.cfg
index 23b8f35..8e03699 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,7 +1,7 @@
 [options.extras_require]
 # Used to run the tests inside the CICD pipeline
 ci =
-    tox==3.23.0
+    tox==3.21.1
 
 # Used inside Tox for running tests
 test =