diff --git a/tox.ini b/tox.ini
index a84fb2a..c06e586 100644
--- a/tox.ini
+++ b/tox.ini
@@ -14,6 +14,7 @@ deps =
     mock
     ipdb
     pytest-cov
+    pytest-random-order
     flaky
 commands = pytest -v -s -W all --cov pylast --cov-report term-missing {posargs}