diff --git a/package.json b/package.json
index 41213a1c0..c2407a0a8 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
         "debug": "~0.7.4",
         "ejs": "~1.0.0",
         "emmet": "git+https://github.com/cloud9ide/emmet-core.git#2ff6dc06ad",
-        "engine.io": "1.6.9",
+        "engine.io": "3.6.1",
         "engine.io-client": "1.6.9",
         "jsonm": "1.0.6",
         "http-error": "~0.0.5",