diff --git a/readme.md b/readme.md
index 3772848..01126e9 100644
--- a/readme.md
+++ b/readme.md
@@ -20,16 +20,18 @@
   * [`Options`](#options)
   * [`unified().use(remarkLintNoDeadUrls[, options])`](#unifieduseremarklintnodeadurls-options)
 * [Related](#related)
+* [Compatibility](#compatibility)
+* [Security](#security)
 * [Contribute](#contribute)
 * [License](#license)
 
 ## What is this?
 
-This package checks whether URLs are alive or not.
+This lint rule checks whether URLs are alive or not.
 
 ## When should I use this?
 
-You can use this package to check that URLs are alive.
+You can use this lint rule to check that URLs are alive.
 
 It’s similar to [`remark-validate-links`][github-remark-validate-links],
 but there’s an important difference.
@@ -48,7 +50,7 @@ You can use it when you want to check URLs programmatically yourself.
 ## Install
 
 This package is [ESM only][github-gist-esm].
-In Node.js (version 16+),
+In Node.js (version 18+),
 install with [npm][npm-install]:
 
 ```sh
@@ -184,6 +186,22 @@ Transform (`(tree: Root, file: VFile) => Promise<Root>`).
 * [`remark-validate-links`][github-remark-validate-links]
   — ensure local links work
 
+## Compatibility
+
+This projects is compatible with maintained versions of Node.js.
+
+When we cut a new major release,
+we drop support for unmaintained versions of Node.
+This means we try to keep the current release line,
+`remark-lint-no-dead-urls@2`,
+compatible with Node.js 18.
+
+## Security
+
+This package can typically be considered safe.
+Note that this package checks URLs over the internet.
+Don’t use this if you consider that’s dangerous.
+
 ## Contribute
 
 See [`contributing.md`][health-contributing] in [`remarkjs/.github`][health]
diff --git a/tsconfig.json b/tsconfig.json
index a31d13e..efef5ad 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -6,10 +6,10 @@
     "declarationMap": true,
     "emitDeclarationOnly": true,
     "exactOptionalPropertyTypes": true,
-    "lib": ["es2020"],
+    "lib": ["es2022"],
     "module": "node16",
     "strict": true,
-    "target": "es2020"
+    "target": "es2022"
   },
   "exclude": ["coverage/", "node_modules/"],
   "include": ["**/*.js", "index.d.ts"]