diff --git a/package.json b/package.json
index 7ea8eb9..4151e99 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
   },
   "homepage": "https://github.com/libp2p/interface-stream-muxer",
   "dependencies": {
-    "async": "^2.0.1",
+    "async": "^2.1.2",
     "chai": "^3.5.0",
     "chai-checkmark": "^1.0.1",
     "detect-node": "^2.0.3",