diff --git a/package-lock.json b/package-lock.json
index e45e5ac..2a0ae93 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -925,9 +925,9 @@
       }
     },
     "reveal.js": {
-      "version": "3.6.0",
-      "resolved": "https://registry.npmjs.org/reveal.js/-/reveal.js-3.6.0.tgz",
-      "integrity": "sha512-ZhXBWoDiaNySAJgs3XqmkHTmjR3Dkkhyy89VY8PLzXBDwNhP7ZEGtBT1H3xJRCEGOD4ScLJBbU75PRiPLQgWgw=="
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/reveal.js/-/reveal.js-4.0.0.tgz",
+      "integrity": "sha512-OvsmH/INmEYzNiYK+xLV04D+ZGASv65exBNWQOmpe2ukkHrYfd9bmaGCyB7heHQIAwI9GyYzw3tbRzS4S6I5CA=="
     },
     "safe-buffer": {
       "version": "5.1.1",
diff --git a/package.json b/package.json
index f999e40..7f5b2da 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": "^4.0.0",
     "sanitize-html": "^1.18.2",
     "socket.io": "^2.1.1"
   },