diff --git a/package.json b/package.json
index 8b00872..0c3ce2e 100644
--- a/package.json
+++ b/package.json
@@ -12,8 +12,8 @@
     "node-pixel": "^0.6.0"
   },
   "devDependencies": {
-    "grunt": "^0.4.5",
-    "grunt-cli": "^0.1.13",
+    "grunt": "^1.0.0",
+    "grunt-cli": "^1.0.0",
     "grunt-contrib-clean": "^0.6.0",
     "grunt-contrib-copy": "^0.8.2",
     "grunt-exec": "^0.4.6",