diff --git a/package.json b/package.json
index ff13511..d035eb6 100644
--- a/package.json
+++ b/package.json
@@ -61,7 +61,7 @@
     "time-grunt": "^1.1.0"
   },
   "peerDependencies": {
-    "grunt": "~0.4.5"
+    "grunt": ">=0.4.0"
   },
   "dependencies": {
     "chalk": "^1.0.0",