diff --git a/themes/hugo-theme-altinn/static/revealjs/plugin/multiplex/package.json b/themes/hugo-theme-altinn/static/revealjs/plugin/multiplex/package.json
index 77f9f1f79b..9469d8ac6d 100644
--- a/themes/hugo-theme-altinn/static/revealjs/plugin/multiplex/package.json
+++ b/themes/hugo-theme-altinn/static/revealjs/plugin/multiplex/package.json
@@ -7,10 +7,10 @@
     "start": "node index.js"
   },
   "engines": {
-    "node": "~22.19.0"
+    "node": "~22.21.0"
   },
   "dependencies": {
-    "express": "~5.1.0",
+    "express": "~5.2.0",
     "grunt-cli": "~1.5.0",
     "mustache": "~4.2.0",
     "socket.io": "~4.8.0"