diff --git a/package.json b/package.json
index f999e40..d687acc 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
     "express": "^4.16.3",
     "mkdirp": "^0.5.1",
     "request": "^2.87.0",
-    "reveal.js": "^3.6.0",
+    "reveal.js": "^4.0.1",
     "sanitize-html": "^1.18.2",
     "socket.io": "^2.1.1"
   },