diff --git a/package.json b/package.json
index e04a94c..7b3e3ce 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,7 @@
     "useragent": "^2.0.9"
   },
   "devDependencies": {
-    "async": "^2.1.1",
+    "async": "^3.0.1",
     "chai": "^4.0.2",
     "del": "^3.0.0",
     "jshint": "^2.9.3",