diff --git a/package.json b/package.json
index 5053d23d5..d48520264 100644
--- a/package.json
+++ b/package.json
@@ -52,7 +52,7 @@
   ],
   "dependencies": {},
   "devDependencies": {
-    "grunt": "0.3.9",
+    "grunt": "~0.3.9",
     "grunt-css": "0.2.0",
     "grunt-compare-size": "0.1.4",
     "grunt-html": "0.1.1",