diff --git a/package.json b/package.json
index 0646bb9..5aa7034 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,7 @@
     "spelunk": "~0.1.2"
   },
   "peerDependencies": {
-    "grunt": "~0.4.1",
+    "grunt": ">=0.4.0",
     "gobble": "^0.7.1"
   },
   "keywords": [