diff --git a/package.json b/package.json
index 9e18281..2fbe4f9 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
   },
   "homepage": "https://github.com/dimichgh/express-hystrix#readme",
   "devDependencies": {
-    "async": "^2.4.1",
+    "async": "^3.0.1",
     "express": "^4.15.3",
     "istanbul": "^0.4.5",
     "mocha": "^3.4.2",