diff --git a/sessions/github_pages_01-2020/package-lock.json b/sessions/github_pages_01-2020/package-lock.json
index 131b0a1..dacfbfe 100644
--- a/sessions/github_pages_01-2020/package-lock.json
+++ b/sessions/github_pages_01-2020/package-lock.json
@@ -5,9 +5,9 @@
   "requires": true,
   "dependencies": {
     "reveal.js": {
-      "version": "4.1.0",
-      "resolved": "https://registry.npmjs.org/reveal.js/-/reveal.js-4.1.0.tgz",
-      "integrity": "sha512-lYOMhxSWgq5jtgspF7eRL0d2rBnHO/VGZ4/qp46yu+eGoWqJkYHEuepEXzx71M8MI6Rf8HBYWaTnKi5uHWcU1Q=="
+      "version": "4.3.0",
+      "resolved": "https://registry.npmjs.org/reveal.js/-/reveal.js-4.3.0.tgz",
+      "integrity": "sha512-KzZxJjj1gmxVNyplY6g9MiGwtDvZJiYkMvG1Qmaita7vWT/8eoTEK+RuIPLvxDeyxOtTz56u2wrOETVO79qL4A=="
     }
   }
 }
diff --git a/sessions/github_pages_01-2020/package.json b/sessions/github_pages_01-2020/package.json
index bc535e4..6b963d9 100644
--- a/sessions/github_pages_01-2020/package.json
+++ b/sessions/github_pages_01-2020/package.json
@@ -10,6 +10,6 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "reveal.js": "^4.1.0"
+    "reveal.js": "^4.3.0"
   }
 }