Testing in Parallel fails after updating to Laravel 11 (Call to undefined method class@anonymous::createApplication())

After updating from Laravel 10 to 11, the --parallel tag does not work when testing. Testing normally still works.

# php artisan test --parallel 
ParaTest v7.7.0 upon PHPUnit 11.5.2 by Sebastian Bergmann and contributors.

PHP Fatal error:  Uncaught Error: Call to undefined method class@anonymous::createApplication() in laravel/framework/src/Illuminate/Testing/Concerns/RunsInParallel.php:175

this is my TestCase.php

<?php

namespace Tests;

use Illuminate\Contracts\Console\Kernel;
use Illuminate\Foundation\Testing\TestCase as BaseTestCase;

abstract class TestCase extends BaseTestCase
{
    /**
     * Creates the application.
     */
    public function createApplication()
    {
        $app = require __DIR__.'/../bootstrap/app.php';
        $app->make(Kernel::class)->bootstrap();

        return $app;
    }
}

This is some of the packages in my composer.json

        "php": "^8.2",
        "ext-imagick": "*",
        "ext-intl": "*",
        "ext-json": "*",
        "laravel/fortify": "^1.20",
        "laravel/framework": "^11.34",
        "laravel/horizon": "^5.22",
        "laravel/pennant": "^1.9",
        "laravel/reverb": "*",
        "laravel/sanctum": "^4.0",
        "laravel/scout": "^10.8",
        "laravel/slack-notification-channel": "^3.2",
        "laravel/telescope": "^5.0",
        "laravel/tinker": "^2.9",
        "laravel/ui": "^4.4",
   ...
   },
    "require-dev": {
        "brianium/paratest": "^7.7",
        "phpunit/phpunit": "^11.0.1",
...