diff --git a/Build/package.json b/Build/package.json
index 9d2f530..71ea6cc 100644
--- a/Build/package.json
+++ b/Build/package.json
@@ -13,7 +13,8 @@
   "license": "GPL-3.0-or-later",
   "homepage": "https://digital.slub-dresden.de",
   "devDependencies": {
-    "grunt": "^1.5.3",
+    "grunt": "^1.6",
+    "grunt-cli": "^1.5.0",
     "grunt-contrib-jshint": "^3.2.0",
     "grunt-contrib-less": "^2.0.0",
     "grunt-contrib-watch": "^1.1.0",