diff --git a/package.json b/package.json
index 0b8d69c..6b889fb 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
     "url": "git+https://github.com/dssrv/dssrv.git"
   },
   "dependencies": {
-    "async": "^2.0.1",
+    "async": "^3.1.0",
     "chalk": "2.3.1",
     "basic-auth": "2.0.0",
     "commander": "2.12.2",