diff --git a/webapp/public/old/bootstrap/package.json b/webapp/public/old/bootstrap/package.json
old mode 100755
new mode 100644
index 5169c4d..21fd8e1
--- a/webapp/public/old/bootstrap/package.json
+++ b/webapp/public/old/bootstrap/package.json
@@ -32,7 +32,7 @@
   "devDependencies": {
     "btoa": "~1.1.2",
     "glob": "~6.0.1",
-    "grunt": "~0.4.5",
+    "grunt": "~1.6.2",
     "grunt-autoprefixer": "~3.0.3",
     "grunt-contrib-clean": "~0.6.0",
     "grunt-contrib-compress": "~0.14.0",