diff --git a/package.json b/package.json
index 28c9585..262a093 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "dependencies": {
     "agent-base": "^2.0.1",
-    "async": "^2.1.5",
+    "async": "^3.2.2",
     "consolidate": "^0.14.5",
     "mailgun-js": "^0.8.2",
     "moment": "^2.17.1",