diff --git a/package.json b/package.json
index dd0ecff..becf689 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
     "tape": "^4.1.0"
   },
   "dependencies": {
-    "async": "^1.4.2",
+    "async": "^3.2.2",
     "bluebird": "^3.4.6",
     "body-parser": "^1.13.1",
     "chalk": "^1.1.0",