diff --git a/package.json b/package.json
index 9daad149..fdf7c15e 100644
--- a/package.json
+++ b/package.json
@@ -20,6 +20,10 @@
     "prettier-plugin-organize-imports": "^4.1.0",
     "yarn-deduplicate": "^6.0.2"
   },
+  "engines": {
+    "node": ">=20",
+    "yarn": ">=1.22.1 <2.0.0"
+  },
   "scripts": {
     "start": "yarn workspace @nordeck/matrix-meetings-widget start",
     "dev": "yarn workspace @nordeck/matrix-meetings-widget dev",