diff --git a/tasks/helm.toml b/tasks/helm.toml
index 31788088a..f25dadb09 100644
--- a/tasks/helm.toml
+++ b/tasks/helm.toml
@@ -26,6 +26,7 @@ hide = true
 description = "Lint the openshell Helm chart (defaults + all CI configuration variants)"
 run = """
   set -e
+  helm dependency build deploy/helm/openshell
   echo "--- helm lint: defaults ---"
   echo "values files: deploy/helm/openshell/values.yaml"
   helm lint deploy/helm/openshell
@@ -45,6 +46,7 @@ run = """
   if ! helm plugin list | grep -q unittest; then
     helm plugin install https://github.com/helm-unittest/helm-unittest --verify=false
   fi
+  helm dependency build deploy/helm/openshell
   helm unittest deploy/helm/openshell
 """