diff --git a/browser.js b/browser.js
index cf449132..23716a9e 100644
--- a/browser.js
+++ b/browser.js
@@ -1,3 +1,4 @@
+import {Buffer} from 'node:buffer';
 import {ReadableWebToNodeStream} from 'readable-web-to-node-stream';
 import {fileTypeFromBuffer, fileTypeFromStream as coreFileTypeFromStream} from './core.js';
 
diff --git a/core.js b/core.js
index 94236dc5..f2c30dd0 100644
--- a/core.js
+++ b/core.js
@@ -1,3 +1,4 @@
+import {Buffer} from 'node:buffer';
 import Token from 'token-types';
 import * as strtok3 from 'strtok3/core';
 import {
diff --git a/index.test-d.ts b/index.test-d.ts
index 20d451b2..429f39e9 100644
--- a/index.test-d.ts
+++ b/index.test-d.ts
@@ -1,3 +1,4 @@
+import {Buffer} from 'node:buffer';
 import fs from 'node:fs';
 import {expectType} from 'tsd';
 import {
diff --git a/package.json b/package.json
index 02f31337..18ad30d8 100644
--- a/package.json
+++ b/package.json
@@ -19,10 +19,9 @@
 		"./core": "./core.js"
 	},
 	"engines": {
-		"node": ">=12.20"
+		"node": "^12.20.0 || ^14.13.1 || >=16.0.0"
 	},
 	"scripts": {
-		"ava": "ava --serial --verbose",
 		"test": "xo && ava && tsd"
 	},
 	"files": [
@@ -197,17 +196,17 @@
 	],
 	"dependencies": {
 		"readable-web-to-node-stream": "^3.0.2",
-		"strtok3": "^7.0.0-alpha.4",
-		"token-types": "^4.1.0"
+		"strtok3": "7.0.0-alpha.4",
+		"token-types": "^4.1.1"
 	},
 	"devDependencies": {
 		"@tokenizer/token": "^0.3.0",
-		"@types/node": "^16.4.1",
+		"@types/node": "^16.11.10",
 		"ava": "^3.15.0",
-		"noop-stream": "^0.1.0",
-		"tsd": "^0.17.0",
-		"typescript": "^4.3.5",
-		"xo": "^0.42.0"
+		"noop-stream": "^1.0.0",
+		"tsd": "^0.19.0",
+		"typescript": "^4.5.2",
+		"xo": "^0.46.4"
 	},
 	"xo": {
 		"envs": [
@@ -217,10 +216,12 @@
 		"rules": {
 			"no-inner-declarations": "warn",
 			"no-await-in-loop": "warn",
-			"promise/prefer-await-to-then": "warn",
-			"prefer-named-capture-group": "off",
-			"@typescript-eslint/no-unsafe-member-access": "off",
+			"no-bitwise": "off",
 			"@typescript-eslint/no-unsafe-assignment": "off"
 		}
+	},
+	"ava": {
+		"serial": true,
+		"verbose": true
 	}
 }
diff --git a/readme.md b/readme.md
index f764814e..57536359 100644
--- a/readme.md
+++ b/readme.md
@@ -38,8 +38,8 @@ This package is for detecting binary-based file formats, not text-based formats
 
 ## Install
 
-```
-$ npm install file-type
+```sh
+npm install file-type
 ```
 
 ## Usage
diff --git a/test.js b/test.js
index 7c1b9be2..ddf8d563 100644
--- a/test.js
+++ b/test.js
@@ -1,3 +1,5 @@
+import process from 'node:process';
+import {Buffer} from 'node:buffer';
 import path from 'node:path';
 import {fileURLToPath} from 'node:url';
 import fs from 'node:fs';
diff --git a/type.js b/type.js
index 1f4eab36..d82863c1 100644
--- a/type.js
+++ b/type.js
@@ -1,4 +1,5 @@
 #!/usr/bin/node
+import process from 'node:process';
 import {fileTypeFromFile} from './index.js';
 
 const [file] = process.argv.slice(2);