diff --git a/index.js b/index.js
index 74c08a3..e457c7e 100644
--- a/index.js
+++ b/index.js
@@ -8,7 +8,7 @@ const defineLazyProperty = require('define-lazy-prop');
 // Path to included `xdg-open`.
 const localXdgOpenPath = path.join(__dirname, 'xdg-open');
 
-const {platform} = process;
+const {platform, arch} = process;
 
 /**
 Get the mount point for fixed drives in WSL.
@@ -215,33 +215,50 @@ const open = async (target, options) => {
 	return subprocess;
 };
 
-function detectPlatformBinary(platformMap, {wsl}) {
+function detectArchBinary(binary) {
+	if (typeof binary === 'string') {
+		return binary;
+	}
+
+	const {[arch]: archBinary} = binary;
+
+	if (!archBinary) {
+		throw new Error(`${arch} is not supported`);
+	}
+
+	return archBinary;
+}
+
+function detectPlatformBinary({[platform]: platformBinary}, {wsl}) {
 	if (wsl && isWsl) {
-		return wsl;
+		return detectArchBinary(wsl);
 	}
 
-	if (!platformMap.has(platform)) {
+	if (!platformBinary) {
 		throw new Error(`${platform} is not supported`);
 	}
 
-	return platformMap.get(platform);
+	return detectArchBinary(platformBinary);
 }
 
 const apps = {};
 
-defineLazyProperty(apps, 'chrome', () => detectPlatformBinary(new Map([
-	['darwin', 'google chrome canary'],
-	['win32', 'Chrome'],
-	['linux', ['google-chrome', 'google-chrome-stable']]
-]), {
-	wsl: '/mnt/c/Program Files (x86)/Google/Chrome/Application/chrome.exe'
+defineLazyProperty(apps, 'chrome', () => detectPlatformBinary({
+	darwin: 'google chrome canary',
+	win32: 'chrome',
+	linux: ['google-chrome', 'google-chrome-stable']
+}, {
+	wsl: {
+		ia32: '/mnt/c/Program Files (x86)/Google/Chrome/Application/chrome.exe',
+		x64: ['/mnt/c/Program Files/Google/Chrome/Application/chrome.exe', '/mnt/c/Program Files (x86)/Google/Chrome/Application/chrome.exe']
+	}
 }));
 
-defineLazyProperty(apps, 'firefox', () => detectPlatformBinary(new Map([
-	['darwin', 'firefox'],
-	['win32', 'C:\\Program Files\\Mozilla Firefox\\firefox.exe'],
-	['linux', 'firefox']
-]), {
+defineLazyProperty(apps, 'firefox', () => detectPlatformBinary({
+	darwin: 'firefox',
+	win32: 'C:\\Program Files\\Mozilla Firefox\\firefox.exe',
+	linux: 'firefox'
+}, {
 	wsl: '/mnt/c/Program Files/Mozilla Firefox/firefox.exe'
 }));
 
diff --git a/package.json b/package.json
index 3a463c5..065ff9e 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
 		"url": "https://sindresorhus.com"
 	},
 	"engines": {
-		"node": "^10.17"
+		"node": ">=10.17"
 	},
 	"scripts": {
 		"test": "xo && tsd"
@@ -57,5 +57,15 @@
 		"ava": "^3.15.0",
 		"tsd": "^0.14.0",
 		"xo": "^0.37.1"
+	},
+	"xo": {
+		"rules": {
+			"node/no-unsupported-features/node-builtins": [
+				"error",
+				{
+					"ignores": ["fs.promises"]
+				}
+			]
+		}
 	}
 }