diff --git a/tox.ini b/tox.ini
index 627c68b..6ea8145 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,6 +8,7 @@ deps =
     pytest
     pytest-cov
     toml
+    passlib
     marshmallow
 commands =
     pytest --cov={envsitepackagesdir}/keyosk --cov-config .coveragerc tests/ --cov-report term-missing