diff --git a/_site/package.json b/_site/package.json
index 0c61c59..3d307fe 100644
--- a/_site/package.json
+++ b/_site/package.json
@@ -9,7 +9,7 @@
     "grunt": "~0.4.1",
     "grunt-contrib-jshint": "~0.6.4",
     "grunt-contrib-uglify": "~0.2.4",
-    "grunt-contrib-concat": "0.4.0",
+    "grunt-contrib-concat": "0.5.1",
     "grunt-contrib-compass": "0.8.0"
   },
   "devDependencies": {