diff --git a/package.json b/package.json
index e57469661..845b71f9a 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
     "tools"
   ],
   "dependencies": {
-    "async": "0.9.x",
+    "async": "~1.0.0",
     "colors": "1.0.x",
     "cycle": "1.0.x",
     "eyes": "0.1.x",