diff --git a/package.json b/package.json
index e9c51d320b..4cc633e1f5 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
     "grunt-browserify": "~4.0.1",
     "grunt-contrib-clean": "~1.0.0",
     "grunt-contrib-compress": "~1.1.0",
-    "grunt-contrib-concat": "~0.5.1",
+    "grunt-contrib-concat": "~1.0.0",
     "grunt-contrib-copy": "~0.8.2",
     "grunt-contrib-cssmin": "~0.14.0",
     "grunt-contrib-imagemin": "~1.0.0",