diff --git a/package-lock.json b/package-lock.json
index c27d2fd..a8081eb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,6 +11,9 @@
       "dependencies": {
         "express": "^4.19.2",
         "saml2-js": "^4.0.2"
+      },
+      "engines": {
+        "node": "20.13.0"
       }
     },
     "node_modules/@oozcitak/dom": {