diff --git a/package-lock.json b/package-lock.json
index 22962084..9d720950 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,6 +5,9 @@
   "packages": {
     "": {
       "name": "playbook",
+      "engines": {
+        "node": ">=20"
+      },
       "devDependencies": {
         "markdownlint-cli": "0.48.0",
         "prettier": "3.9.6"
diff --git a/package.json b/package.json
index 473f963a..78100410 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,9 @@
 {
   "name": "playbook",
   "private": true,
+  "engines": {
+    "node": ">=20"
+  },
   "devDependencies": {
     "markdownlint-cli": "0.48.0",
     "prettier": "3.9.6"