diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 61914da..e20057f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,7 +8,7 @@ jobs:
       DB_DATABASE: phplist
       DB_USERNAME: root
       DB_PASSWORD: phplist
-      BROADCAST_DRIVER: log  
+      BROADCAST_DRIVER: log
     services:
       mysql:
         image: mysql:5.7
@@ -22,17 +22,21 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php-versions: ['7.2', '7.3', '7.4', '8.0']
-        # dependencies: ['latest', 'oldest']
+        php-versions: ['8.1']
     steps:
       - name: Checkout
         uses: actions/checkout@v2
       - name: Setup PHP, with composer and extensions
-        uses: shivammathur/setup-php@v2 #https://github.com/shivammathur/setup-php
+        uses: shivammathur/setup-php@v2
         with:
           php-version: ${{ matrix.php-versions }}
           extensions: mbstring, dom, fileinfo, mysql
           coverage: xdebug #optional
+      - name: Install Symfony CLI
+        run: |
+          curl -sS https://get.symfony.com/cli/installer | bash
+          mv $HOME/.symfony*/bin/symfony /usr/local/bin/symfony
+          symfony version
       - name: Start mysql service
         run: sudo /etc/init.d/mysql start
       - name: Verify MySQL connection on host
@@ -44,36 +48,23 @@ jobs:
         uses: actions/cache@v2
         with:
           path: ${{ steps.composer-cache.outputs.dir }}
-          # Use composer.json for key, if composer.lock is not committed.
-          # key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
           key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
           restore-keys: ${{ runner.os }}-composer-
       - name: Install the latest dependencies
         run: composer install
-        continue-on-error: ${{matrix.php-versions == '8.0' }} # [temp-php8]
-      # - name: Install lowest dependencies from 
-      #   run: composer update --with-dependencies --prefer-stable --prefer-dist --prefer-lowest
-      #   if: ${{ matrix.dependencies }} == "oldest"
       - name: Set up database schema
         run: mysql --host 127.0.0.1 --port ${{ job.services.mysql.ports['3306'] }} -u${{ env.DB_USERNAME }} -p${{ env.DB_PASSWORD }} ${{ env.DB_DATABASE }} < vendor/phplist/core/resources/Database/Schema.sql
-        continue-on-error: ${{matrix.php-versions == '8.0' }} # [temp-php8]
       - name: Validating composer.json
         run: composer validate --no-check-all --no-check-lock --strict;
-        continue-on-error: ${{matrix.php-versions == '8.0' }} # [temp-php8]
       - name: Linting all php files
         run: find src/ tests/ public/ -name ''*.php'' -print0 | xargs -0 -n 1 -P 4 php -l; php -l;
       - name: Running integration tests with phpunit
         run: vendor/bin/phpunit tests/Integration/;
-        continue-on-error: ${{matrix.php-versions == '8.0' }} # [temp-php8]
       - name: Running the system tests
         run: vendor/bin/phpunit tests/System/;
-        continue-on-error: ${{matrix.php-versions == '8.0' }} # [temp-php8]
       - name: Running static analysis
         run: vendor/bin/phpstan analyse -l 5 src/ tests/;
-        continue-on-error: ${{matrix.php-versions == '8.0' }} # [temp-php8]
       - name: Running PHPMD
         run: vendor/bin/phpmd src/ text vendor/phplist/core/config/PHPMD/rules.xml;
-        continue-on-error: ${{matrix.php-versions == '8.0' }} # [temp-php8]
       - name: Running PHP_CodeSniffer
         run: vendor/bin/phpcs --standard=vendor/phplist/core/config/PhpCodeSniffer/ src/ tests/;
-        continue-on-error: ${{matrix.php-versions == '8.0' }} # [temp-php8]
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 9cd86d7..8bf5efa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,3 +13,4 @@
 /public/
 /var/
 /vendor/
+.phpunit.result.cache
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d6f9c57..cbfb13f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,11 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 
 ### Fixed
 
+## 5.0.0-alpha1
+
+### Changed
+- updated to php8.1
+
 ## 4.0.0-alpha2
 
 ### Added
diff --git a/composer.json b/composer.json
index a7ea5ca..93b8650 100644
--- a/composer.json
+++ b/composer.json
@@ -33,14 +33,14 @@
         "phplist/core": "dev-ISSUE-337"
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.5.2",
-        "phpunit/phpunit-mock-objects": "^6.1.2",
+        "phpunit/phpunit": "^9.5",
         "guzzlehttp/guzzle": "^7.2.0",
         "squizlabs/php_codesniffer": "^3.5.8",
-        "phpstan/phpstan": " ^0.12.57",
+        "phpstan/phpstan": "^1.10",
         "nette/caching": "^3.1.0",
         "nikic/php-parser": "^v4.10.4",
-        "phpmd/phpmd": "^2.9.1"
+        "phpmd/phpmd": "^2.9.1",
+        "symfony/process": "^6.4"
     },
     "autoload": {
         "psr-4": {
@@ -52,15 +52,6 @@
             "PhpList\\WebFrontend\\Tests\\": "tests/"
         }
     },
-    "repositories": [
-        {
-            "type": "path",
-            "url": "../core",
-            "options": {
-                "symlink": true
-            }
-        }
-    ],
     "scripts": {
         "list-modules": [
             "PhpList\\Core\\Composer\\ScriptHandler::listModules"
@@ -87,7 +78,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-ISSUE-337": "v5.0.x-dev"
+            "dev-ISSUE-337": "5.0.x-dev"
         },
         "symfony-app-dir": "bin",
         "symfony-bin-dir": "bin",
diff --git a/tests/Integration/Composer/ScriptsTest.php b/tests/Integration/Composer/ScriptsTest.php
index 8d4d915..01afaf0 100644
--- a/tests/Integration/Composer/ScriptsTest.php
+++ b/tests/Integration/Composer/ScriptsTest.php
@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types=1);
 
 namespace PhpList\WebFrontend\Tests\Integration\Composer;
@@ -12,148 +13,69 @@
  */
 class ScriptsTest extends TestCase
 {
-    /**
-     * @test
-     */
-    public function publicDirectoryHasBeenCreated()
-    {
-        static::assertDirectoryExists($this->getAbsolutePublicDirectoryPath());
-    }
-
-    /**
-     * @return string
-     */
-    private function getAbsolutePublicDirectoryPath(): string
-    {
-        return dirname(__DIR__, 3) . '/public/';
-    }
-
-    /**
-     * @return string[][]
-     */
-    public function publicDirectoryFilesDataProvider(): array
-    {
-        return [
-            'production entry point' => ['app.php'],
-            'development entry point' => ['app_dev.php'],
-            'testing entry point' => ['app_test.php'],
-            '.htaccess' => ['.htaccess'],
-        ];
-    }
-
-    /**
-     * @test
-     * @param string $fileName
-     * @dataProvider publicDirectoryFilesDataProvider
-     */
-    public function publicDirectoryFilesExist(string $fileName)
-    {
-        static::assertFileExists($this->getAbsolutePublicDirectoryPath() . $fileName);
-    }
-
-    /**
-     * @test
-     */
-    public function binariesDirectoryHasBeenCreated()
+    private function getBundleConfigurationFilePath(): string
     {
-        static::assertDirectoryExists($this->getAbsoluteBinariesDirectoryPath());
+        return dirname(__DIR__, 3) . '/config/bundles.yml';
     }
 
-    /**
-     * @return string
-     */
-    private function getAbsoluteBinariesDirectoryPath(): string
+    public function testBundleConfigurationFileExists(): void
     {
-        return dirname(__DIR__, 3) . '/bin/';
+        self::assertFileExists($this->getBundleConfigurationFilePath());
     }
 
-    /**
-     * @return string[][]
-     */
-    public function binariesDataProvider(): array
+    public function bundleClassNameDataProvider(): array
     {
         return [
-            'Symfony console' => ['console'],
+            'Symfony framework bundle' => ['Symfony\\Bundle\\FrameworkBundle\\FrameworkBundle'],
+            'Doctrine bundle' => ['Doctrine\\Bundle\\DoctrineBundle\\DoctrineBundle'],
+            'empty start page bundle' => ['PhpList\\Core\\EmptyStartPageBundle\\EmptyStartPageBundle'],
         ];
     }
 
     /**
-     * @test
-     * @param string $fileName
-     * @dataProvider binariesDataProvider
+     * @dataProvider bundleClassNameDataProvider
      */
-    public function binariesExist(string $fileName)
+    public function testBundleConfigurationFileContainsModuleBundles(string $bundleClassName): void
     {
-        static::assertFileExists($this->getAbsoluteBinariesDirectoryPath() . $fileName);
+        $fileContents = file_get_contents($this->getBundleConfigurationFilePath());
+        self::assertStringContainsString($bundleClassName, $fileContents);
     }
 
-    /**
-     * @return string
-     */
-    private function getBundleConfigurationFilePath(): string
+    private function getModuleRoutesConfigurationFilePath(): string
     {
-        return dirname(__DIR__, 3) . '/config/bundles.yml';
+        return dirname(__DIR__, 3) . '/config/routing_modules.yml';
     }
 
-    /**
-     * @test
-     */
-    public function bundleConfigurationFileExists()
+    public function testModuleRoutesConfigurationFileExists(): void
     {
-        static::assertFileExists($this->getBundleConfigurationFilePath());
+        self::assertFileExists($this->getModuleRoutesConfigurationFilePath());
     }
 
-    /**
-     * @return string[][]
-     */
-    public function bundleClassNameDataProvider(): array
+    public function moduleRoutingDataProvider(): array
     {
         return [
-            'framework bundle' => ['Symfony\\Bundle\\FrameworkBundle\\FrameworkBundle'],
+            'route name' => ['phplist/core.homepage'],
+            'resource' => ["resource: '@EmptyStartPageBundle/Controller/'"],
+            'type' => ['type: attribute'],
         ];
     }
 
     /**
-     * @test
-     * @param string $bundleClassName
-     * @dataProvider bundleClassNameDataProvider
-     */
-    public function bundleConfigurationFileContainsModuleBundles(string $bundleClassName)
-    {
-        $fileContents = file_get_contents($this->getBundleConfigurationFilePath());
-
-        static::assertContains($bundleClassName, $fileContents);
-    }
-
-    /**
-     * @return string
-     */
-    private function getModuleRoutesConfigurationFilePath(): string
-    {
-        return dirname(__DIR__, 3) . '/config/routing_modules.yml';
-    }
-
-    /**
-     * @test
+     * @dataProvider moduleRoutingDataProvider
      */
-    public function moduleRoutesConfigurationFileExists()
+    public function testModuleRoutesConfigurationFileContainsModuleRoutes(string $routeSearchString): void
     {
-        static::assertFileExists($this->getModuleRoutesConfigurationFilePath());
+        $fileContents = file_get_contents($this->getModuleRoutesConfigurationFilePath());
+        self::assertStringContainsString($routeSearchString, $fileContents);
     }
 
-    /**
-     * @test
-     */
-    public function parametersConfigurationFileExists()
+    public function testParametersConfigurationFileExists(): void
     {
-        static::assertFileExists(dirname(__DIR__, 3) . '/config/parameters.yml');
+        self::assertFileExists(dirname(__DIR__, 3) . '/config/parameters.yml');
     }
 
-    /**
-     * @test
-     */
-    public function modulesConfigurationFileExists()
+    public function testModulesConfigurationFileExists(): void
     {
-        static::assertFileExists(dirname(__DIR__, 3) . '/config/config_modules.yml');
+        self::assertFileExists(dirname(__DIR__, 3) . '/config/config_modules.yml');
     }
 }
diff --git a/tests/System/ApplicationBundle/PhpListApplicationBundleTest.php b/tests/System/ApplicationBundle/PhpListApplicationBundleTest.php
index 1588c7e..7504ebe 100644
--- a/tests/System/ApplicationBundle/PhpListApplicationBundleTest.php
+++ b/tests/System/ApplicationBundle/PhpListApplicationBundleTest.php
@@ -1,4 +1,5 @@
 <?php
+
 declare(strict_types=1);
 
 namespace PhpList\WebFrontend\Tests\System\ApplicationBundle;
@@ -16,57 +17,32 @@ class PhpListApplicationBundleTest extends TestCase
 {
     use SymfonyServerTrait;
 
-    /**
-     * @var Client
-     */
-    private $httpClient = null;
+    private ?Client $httpClient = null;
 
-    protected function setUp()
+    protected function setUp(): void
     {
+        parent::setUp();
         $this->httpClient = new Client(['http_errors' => false]);
     }
 
-    protected function tearDown()
+    protected function tearDown(): void
     {
         $this->stopSymfonyServer();
+        $this->httpClient = null;
+        parent::tearDown();
     }
 
-    /**
-     * @return string[][]
-     */
-    public function environmentDataProvider(): array
-    {
-        return [
-            'test' => ['test'],
-            'dev' => ['dev'],
-        ];
-    }
-
-    /**
-     * @test
-     * @param string $environment
-     * @dataProvider environmentDataProvider
-     */
-    public function homepageReturnsSuccess(string $environment)
+    public function testHomepageReturnsSuccess(): void
     {
-        $this->startSymfonyServer($environment);
-
-        $response = $this->httpClient->get('/', ['base_uri' => $this->getBaseUrl()]);
-
-        static::assertSame(200, $response->getStatusCode());
-    }
-
-    /**
-     * @test
-     * @param string $environment
-     * @dataProvider environmentDataProvider
-     */
-    public function homepageReturnsContent(string $environment)
-    {
-        $this->startSymfonyServer($environment);
-
-        $response = $this->httpClient->get('/', ['base_uri' => $this->getBaseUrl()]);
-
-        static::assertNotEmpty($response->getBody()->getContents());
+        $this->startSymfonyServer();
+        $response = $this->httpClient->get('/api/v2', [
+            'base_uri' => $this->getBaseUrl(),
+        ]);
+
+        self::assertSame(200, $response->getStatusCode());
+        self::assertStringContainsString(
+            'This page has been intentionally left empty.',
+            $response->getBody()->getContents()
+        );
     }
 }