diff --git a/package.json b/package.json
index ec39c0b008..97c63fae6c 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
   },
   "dependencies": {
     "debug": "2.3.3",
-    "engine.io": "1.8.2",
+    "engine.io": "3.4.0",
     "has-binary": "0.1.7",
     "object-assign": "4.1.0",
     "socket.io-adapter": "0.5.0",