diff --git a/src/node/BrowserFetcher.ts b/src/node/BrowserFetcher.ts
index 01140df4c487b..671aa4ce18406 100644
--- a/src/node/BrowserFetcher.ts
+++ b/src/node/BrowserFetcher.ts
@@ -41,12 +41,14 @@ const downloadURLs = {
   chrome: {
     linux: '%s/chromium-browser-snapshots/Linux_x64/%d/%s.zip',
     mac: '%s/chromium-browser-snapshots/Mac/%d/%s.zip',
+    macArm: '%s/chromium-browser-snapshots/Mac_Arm/%d/%s.zip',
     win32: '%s/chromium-browser-snapshots/Win/%d/%s.zip',
     win64: '%s/chromium-browser-snapshots/Win_x64/%d/%s.zip',
   },
   firefox: {
     linux: '%s/firefox-%s.en-US.%s-x86_64.tar.bz2',
     mac: '%s/firefox-%s.en-US.%s.dmg',
+    macArm: '%s/firefox-%s.en-US.%s.dmg',
     win32: '%s/firefox-%s.en-US.%s.zip',
     win64: '%s/firefox-%s.en-US.%s.zip',
   },
@@ -67,7 +69,7 @@ const browserConfig = {
  * Supported platforms.
  * @public
  */
-export type Platform = 'linux' | 'mac' | 'win32' | 'win64';
+export type Platform = 'linux' | 'mac' | 'macArm' | 'win32' | 'win64';
 
 function archiveName(
   product: Product,
@@ -76,13 +78,13 @@ function archiveName(
 ): string {
   if (product === 'chrome') {
     if (platform === 'linux') return 'chrome-linux';
-    if (platform === 'mac') return 'chrome-mac';
+    if (platform === 'mac' || platform === 'macArm') return 'chrome-mac';
     if (platform === 'win32' || platform === 'win64') {
       // Windows archive name changed at r591479.
       return parseInt(revision, 10) > 591479 ? 'chrome-win' : 'chrome-win32';
     }
   } else if (product === 'firefox') {
-    return platform;
+    return platform === 'macArm' ? 'mac' : platform;
   }
 }
 
@@ -214,7 +216,8 @@ export class BrowserFetcher {
     }
 
     const platform = os.platform();
-    if (platform === 'darwin') this._platform = 'mac';
+    if (platform === 'darwin')
+      this._platform = os.arch() === 'arm64' ? 'macArm' : 'mac';
     else if (platform === 'linux') this._platform = 'linux';
     else if (platform === 'win32')
       this._platform = os.arch() === 'x64' ? 'win64' : 'win32';
@@ -353,7 +356,7 @@ export class BrowserFetcher {
     const folderPath = this._getFolderPath(revision);
     let executablePath = '';
     if (this._product === 'chrome') {
-      if (this._platform === 'mac')
+      if (this._platform === 'mac' || this._platform === 'macArm')
         executablePath = path.join(
           folderPath,
           archiveName(this._product, this._platform, revision),
@@ -376,7 +379,7 @@ export class BrowserFetcher {
         );
       else throw new Error('Unsupported platform: ' + this._platform);
     } else if (this._product === 'firefox') {
-      if (this._platform === 'mac')
+      if (this._platform === 'mac' || this._platform === 'macArm')
         executablePath = path.join(
           folderPath,
           'Firefox Nightly.app',
diff --git a/src/node/install.ts b/src/node/install.ts
index 856b13ae9ce3c..c9dc2457782f1 100644
--- a/src/node/install.ts
+++ b/src/node/install.ts
@@ -14,7 +14,6 @@
  * limitations under the License.
  */
 
-import os from 'os';
 import https, { RequestOptions } from 'https';
 import ProgressBar from 'progress';
 import URL from 'url';
@@ -95,13 +94,9 @@ export async function downloadBrowser(): Promise<void> {
     if (NPM_NO_PROXY) process.env.NO_PROXY = NPM_NO_PROXY;
 
     function onSuccess(localRevisions: string[]): void {
-      // Use Intel x86 builds on Apple M1 until native macOS arm64
-      // Chromium builds are available.
-      if (os.platform() !== 'darwin' && os.arch() !== 'arm64') {
-        logPolitely(
-          `${supportedProducts[product]} (${revisionInfo.revision}) downloaded to ${revisionInfo.folderPath}`
-        );
-      }
+      logPolitely(
+        `${supportedProducts[product]} (${revisionInfo.revision}) downloaded to ${revisionInfo.folderPath}`
+      );
       localRevisions = localRevisions.filter(
         (revision) => revision !== revisionInfo.revision
       );