diff --git a/package.json b/package.json
index 02bf605..344575e 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "rewire": "^2.1.3"
   },
   "peerDependencies": {
-    "grunt": "~0.4.5"
+    "grunt": ">=0.4.0"
   },
   "keywords": [
     "gruntplugin"