diff --git a/README.md b/README.md
index e8e0640..7c7169b 100644
--- a/README.md
+++ b/README.md
@@ -81,4 +81,4 @@ const numbers = sqids.decode(id) // [1, 2, 3]
 
 ## 📝 License
 
-[MIT](LICENSE)
\ No newline at end of file
+[MIT](LICENSE)
diff --git a/package.json b/package.json
index 0230d70..0ffe87e 100644
--- a/package.json
+++ b/package.json
@@ -79,6 +79,9 @@
     "maintained node versions",
     "not dead"
   ],
+  "engines": {
+    "node": ">=18"
+  },
   "devDependencies": {
     "@niieani/scaffold": "^1.7.8",
     "nodemark": "^0.3.0",