diff --git a/package.json b/package.json
index 45e0ac2f..6c195ffc 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
   },
   "devDependencies": {
     "dateformat": "1.0.11",
-    "grunt": "1.0.1",
+    "grunt": "^0.4.5",
     "grunt-contrib-clean": "1.0.0",
     "grunt-contrib-concat": "1.0.1",
     "grunt-contrib-connect": "1.0.2",