diff --git a/package.json b/package.json
index 18c9f96434..65fe10d3db 100644
--- a/package.json
+++ b/package.json
@@ -13,6 +13,7 @@
 	"license": "GPL-2.0-or-later",
 	"devDependencies": {
 		"autoprefixer": "^6.5.1",
+		"grunt": "~0.4.5",
 		"grunt-banner": "^0.6.0",
 		"grunt-contrib-clean": "~1.0.0",
 		"grunt-contrib-compress": "~1.3.0",