diff --git a/_templates/lightning/package.json b/_templates/lightning/package.json
index b453070..45cd253 100644
--- a/_templates/lightning/package.json
+++ b/_templates/lightning/package.json
@@ -25,7 +25,7 @@
     "express": "~4.16.0",
     "grunt-cli": "~1.3.0",
     "mustache": "~2.2.1",
-    "socket.io": "~2.0.2"
+    "socket.io": "~3.0.0"
   },
   "devDependencies": {
     "grunt": "~0.4.5",