diff --git a/.npmrc b/.npmrc
new file mode 100644
index 0000000..b6f27f1
--- /dev/null
+++ b/.npmrc
@@ -0,0 +1 @@
+engine-strict=true
diff --git a/package-lock.json b/package-lock.json
index f1f1e24..0f194e7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -29,6 +29,9 @@
         "typescript": "^5.2.2",
         "vitepress": "^1.1.3",
         "vitepress-plugin-mermaid": "^2.0.16"
+      },
+      "engines": {
+        "node": ">=18.0.0"
       }
     },
     "node_modules/@aashutoshrathi/word-wrap": {
diff --git a/package.json b/package.json
index 7b46e85..2241516 100644
--- a/package.json
+++ b/package.json
@@ -4,6 +4,9 @@
   "description": "Octobug's blog.",
   "main": "index.js",
   "type": "module",
+  "engines" : { 
+    "node" : ">=18.0.0"
+  },
   "scripts": {
     "dev": "vitepress dev --host",
     "build": "vitepress build",