diff --git a/tests/test-requirements.txt b/tests/test-requirements.txt
index f6e856f..b4fd0c8 100644
--- a/tests/test-requirements.txt
+++ b/tests/test-requirements.txt
@@ -1,7 +1,7 @@
 nose==1.3.7
 coverage==5.3
 mock==4.0.2
-tox==3.20.1
+tox==4.0.8
 testtools==2.4.0
 ddt==1.4.1
 jsonschema==3.2.0
\ No newline at end of file