diff --git a/package-lock.json b/package-lock.json
index c2906d2..ad923ab 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,7 +12,7 @@
         "markdownlint-rule-relative-links": "5.1.2"
       },
       "engines": {
-        "node": "24.x"
+        "node": "24.21.0"
       }
     },
     "node_modules/@nodelib/fs.scandir": {
diff --git a/package.json b/package.json
index f5249a3..b755af2 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "version": "1.0.0",
   "private": true,
   "engines": {
-    "node": "24.x"
+    "node": "24.21.0"
   },
   "scripts": {
     "lint": "markdownlint-cli2 \"**/*.md\" \"#node_modules\"",