diff --git a/assets/wmt/reveal/package.json b/assets/wmt/reveal/package.json
index eaec2b24..cd90f4c5 100644
--- a/assets/wmt/reveal/package.json
+++ b/assets/wmt/reveal/package.json
@@ -38,7 +38,7 @@
     "grunt-zip": "~0.17.1",
     "mustache": "~2.2.1",
     "node-sass": "~3.13.0",
-    "socket.io": "^1.4.8"
+    "socket.io": "^3.0.0"
   },
   "license": "MIT"
 }