diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 11f06d4..cd13897 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [16.x, 18.x]
+        node-version: [18.x, 20.x]
       fail-fast: false
     steps:
       - name: Harden Runner
diff --git a/README.md b/README.md
index 97e6092..6a9b603 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ NodeSecure security flags.
 
 ## Requirements
 
-- [Node.js](https://nodejs.org/en/) v14 or higher
+- [Node.js](https://nodejs.org/en/) v18 or higher
 
 ## Getting Started
 
diff --git a/package.json b/package.json
index c2f297c..8b13a30 100644
--- a/package.json
+++ b/package.json
@@ -50,5 +50,8 @@
     "eslint": "^8.32.0",
     "turndown": "^7.1.1"
   },
-  "type": "module"
+  "type": "module",
+  "engines": {
+    "node": ">=18"
+  }
 }