diff --git a/tox.ini b/tox.ini
index 659f20d..c8263c1 100644
--- a/tox.ini
+++ b/tox.ini
@@ -113,3 +113,7 @@
   rjsonnet
 commands =
   python3 {toxinidir}/hack/promtool-test.py
+
+[testenv:helm-unittest]
+commands =
+  python3 {toxinidir}/hack/helm-unittest.py