diff --git a/package.json b/package.json
index 9f06f1720e..7286ee95f8 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "css/ol.css"
   ],
   "dependencies": {
-    "async": "2.1.5",
+    "async": "2.2.0",
     "browserify": "14.0.0",
     "closure-util": "1.18.0",
     "derequire": "2.0.6",