diff --git a/test-requirements.txt b/test-requirements.txt
index 6c8eea2..629094c 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -2,4 +2,4 @@
 -r requirements/mypy.txt
 -r requirements/flake8.txt
 -r requirements/tests.txt
-tox==3.15.2
+tox==3.16.1