diff --git a/package.json b/package.json
index 6483f8f..d0ab941 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "node": ">= 0.6.0"
   },
   "dependencies": {
-    "async": "^0.9.0",
+    "async": "^3.1.0",
     "deep-extend": "~0.2.5",
     "glob": "~3.1.17",
     "juice": "^1.1.2",