diff --git a/package.json b/package.json
index 147891f1..5e3d7e6a 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
   },
   "optionalDependencies": {
     "secp256k1": "3.0.0",
-    "socket.io": "1.45.0"
+    "socket.io": "1.4.5"
   },
   "devDependencies": {
     "browserify": "13.0.0",