diff --git a/package.json b/package.json
index 41213a1c0..c2bd19b5f 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
         "ejs": "~1.0.0",
         "emmet": "git+https://github.com/cloud9ide/emmet-core.git#2ff6dc06ad",
         "engine.io": "1.6.9",
-        "engine.io-client": "1.6.9",
+        "engine.io-client": "5.0.0",
         "jsonm": "1.0.6",
         "http-error": "~0.0.5",
         "less": "^2.4.0",