diff --git a/package.json b/package.json
index 3436d4b..9362429 100644
--- a/package.json
+++ b/package.json
@@ -25,9 +25,9 @@
   "dependencies": {},
   "devDependencies": {
     "grunt": "^0.4.5",
-    "grunt-bundle-jsnext-lib": "^0.2.1",
+    "grunt-bundle-jsnext-lib": "^0.4.1",
     "grunt-cli": "^0.1.13",
     "grunt-contrib-clean": "^0.6.0",
-    "grunt-contrib-copy": "^0.6.0"
+    "grunt-contrib-copy": "^0.7.0"
   }
 }