diff --git a/dev-tools/composer-alias-update.php b/dev-tools/composer-alias-update.php
deleted file mode 100644
index 1b616870e97..00000000000
--- a/dev-tools/composer-alias-update.php
+++ /dev/null
@@ -1,23 +0,0 @@
-#!/usr/bin/env php
-<?php
-
-require_once __DIR__.'/../vendor/autoload.php';
-
-const COMPOSER_JSON_FILE = __DIR__.'/../composer.json';
-
-function convertAppVersionToAliasedVersion(string $version): string
-{
-    $parts = explode('.', $version, 3);
-
-    return sprintf('%d.%d-dev', $parts[0], $parts[1]);
-}
-
-$composerJson = json_decode(file_get_contents(COMPOSER_JSON_FILE), true);
-
-if (isset($composerJson['extra']['branch-alias'])) {
-    $composerJson['extra']['branch-alias'] = [
-        'dev-master' => convertAppVersionToAliasedVersion(PhpCsFixer\Console\Application::VERSION),
-    ];
-}
-
-file_put_contents(COMPOSER_JSON_FILE, json_encode($composerJson, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT)."\n");
diff --git a/tests/AutoReview/ComposerTest.php b/tests/AutoReview/ComposerTest.php
deleted file mode 100644
index e8ca1c41ffa..00000000000
--- a/tests/AutoReview/ComposerTest.php
+++ /dev/null
@@ -1,53 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-/*
- * This file is part of PHP CS Fixer.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *     Dariusz Rumiński <dariusz.ruminski@gmail.com>
- *
- * This source file is subject to the MIT license that is bundled
- * with this source code in the file LICENSE.
- */
-
-namespace PhpCsFixer\Tests\AutoReview;
-
-use PhpCsFixer\Console\Application;
-use PhpCsFixer\Tests\TestCase;
-
-/**
- * @author Dariusz Rumiński <dariusz.ruminski@gmail.com>
- *
- * @internal
- *
- * @coversNothing
- * @group auto-review
- * @group covers-nothing
- */
-final class ComposerTest extends TestCase
-{
-    public function testBranchAlias(): void
-    {
-        $composerJson = json_decode(file_get_contents(__DIR__.'/../../composer.json'), true);
-
-        if (!isset($composerJson['extra']['branch-alias'])) {
-            $this->addToAssertionCount(1); // composer.json doesn't contain branch alias, all good!
-
-            return;
-        }
-
-        static::assertSame(
-            ['dev-master' => $this->convertAppVersionToAliasedVersion(Application::VERSION)],
-            $composerJson['extra']['branch-alias']
-        );
-    }
-
-    private function convertAppVersionToAliasedVersion(string $version): string
-    {
-        $parts = explode('.', $version, 3);
-
-        return sprintf('%d.%d-dev', $parts[0], $parts[1]);
-    }
-}