diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2f056a2..1039858 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,8 +17,8 @@ jobs:
         strategy:
             fail-fast: false
             matrix:
-                php: ['7.4', '8.0']
-                laravel: ['^8.0']
+                php: ['8.0', '8.1']
+                laravel: ['^9.0']
                 stability: [prefer-lowest, prefer-stable]
 
         name: "CI - PHP: ${{ matrix.php }} - Laravel ${{ matrix.laravel }} - ${{ matrix.stability }}"
diff --git a/.github/workflows/phpstan.yml b/.github/workflows/phpstan.yml
index da32923..ce1c110 100644
--- a/.github/workflows/phpstan.yml
+++ b/.github/workflows/phpstan.yml
@@ -19,7 +19,7 @@ jobs:
                 php: ['8.1', '8.0']
                 phpstan: [^1.0]
                 symplify-rules: ['10.1.2']
-                nunomaduro-larastan: [^1.0]
+                nunomaduro-larastan: [^2.0]
                 ergebnis-phpstan-rules: [^1.0]
 
         name: "PHPStan | PHP: ${{ matrix.php }}"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 669bcd1..61cd09d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,13 @@
 
 All notable changes to `laravel-multienv` will be documented in this file.
 
-## [Unreleased](https://github.com/allysonsilva/laravel-multienv/compare/v1.0.0...1.x)
+## [Unreleased](https://github.com/allysonsilva/laravel-multienv/compare/v2.0.0...2.x)
+
+## [v2.0.0 (2022-04-13)](https://github.com/allysonsilva/laravel-multienv/compare/1.x...v2.0.0)
+
+### Changed
+
+- **Added support for Laravel v9.x**
 
 ## [v1.0.0 (2022-04-10)](https://github.com/allysonsilva/laravel-multienv/releases/tag/v1.0.0)
 
diff --git a/README.md b/README.md
index 62abcd3..a245077 100644
--- a/README.md
+++ b/README.md
@@ -22,8 +22,15 @@
 
 The package has been developed and tested to work with the following minimum requirements:
 
-- *PHP 7.4*
-- *Laravel 8.0*
+- *PHP 8.0*
+- *Laravel 9.0*
+
+### Laravel version Compatibility
+
+| Laravel | PHP |    Package   |
+|:-------:|:---:|:------------:|
+|    9.x  | 8.0 |   **^2.0**   |
+|    8.x  | 7.4 |   **^1.0**   |
 
 ### Install the Package
 
@@ -289,7 +296,7 @@ If you discover any security related issues, please email github@allyson.dev ins
 The MIT License (MIT). Please see [License File](LICENSE.md) for more information.
 
 [ico-php]: https://img.shields.io/packagist/php-v/allysonsilva/laravel-multienv?color=%234F5B93&logo=php
-[ico-laravel]: https://img.shields.io/static/v1?label=laravel&message=%E2%89%A58.0&color=ff2d20&logo=laravel
+[ico-laravel]: https://img.shields.io/static/v1?label=laravel&message=%E2%89%A59.0&color=ff2d20&logo=laravel
 [ico-actions]: https://github.com/allysonsilva/laravel-multienv/actions/workflows/ci.yml/badge.svg
 [ico-codecov]: https://codecov.io/gh/allysonsilva/laravel-multienv/branch/main/graph/badge.svg?token=H546OKODQB
 [ico-version]: https://img.shields.io/packagist/v/allysonsilva/laravel-multienv.svg?label=stable
diff --git a/composer.json b/composer.json
index 310c455..fcb1102 100644
--- a/composer.json
+++ b/composer.json
@@ -21,11 +21,11 @@
     ],
     "homepage": "https://github.com/allysonsilva/laravel-multienv",
     "require": {
-        "php": ">=7.4",
-        "laravel/framework": "^8.0"
+        "php": ">=8.0",
+        "laravel/framework": "^9.0"
     },
     "require-dev": {
-        "orchestra/testbench": "^6.22",
+        "orchestra/testbench": "^7.0",
         "phpunit/phpunit": "^9.5"
     },
     "minimum-stability": "dev",
diff --git a/tests/Concerns/SetUpBefore.php b/tests/Concerns/SetUpBefore.php
index ac7b724..7f8864a 100644
--- a/tests/Concerns/SetUpBefore.php
+++ b/tests/Concerns/SetUpBefore.php
@@ -37,16 +37,6 @@ public static function applicationBasePath()
         return realpath(__DIR__ . '/../LaravelApp');
     }
 
-    /**
-     * Get base path.
-     *
-     * @return string
-     */
-    protected function getBasePath()
-    {
-        return static::applicationBasePath();
-    }
-
     /**
      * Resolve application setUp.
      *
diff --git a/tests/LaravelApp/app/Http/HttpKernel.php b/tests/LaravelApp/app/Http/HttpKernel.php
index 000fa4f..6c912b5 100644
--- a/tests/LaravelApp/app/Http/HttpKernel.php
+++ b/tests/LaravelApp/app/Http/HttpKernel.php
@@ -18,7 +18,7 @@ class HttpKernel extends LaravelHttpKernel
      * @var array
      */
     protected $middleware = [
-        // \Illuminate\Http\Middleware\TrustProxies::class,
+        \Illuminate\Http\Middleware\TrustProxies::class,
         // \Illuminate\Http\Middleware\HandleCors::class,
         \Illuminate\Foundation\Http\Middleware\PreventRequestsDuringMaintenance::class,
         \Illuminate\Foundation\Http\Middleware\ValidatePostSize::class,
diff --git a/tests/LaravelApp/config/app.php b/tests/LaravelApp/config/app.php
index 15f2156..02d50e9 100644
--- a/tests/LaravelApp/config/app.php
+++ b/tests/LaravelApp/config/app.php
@@ -1,5 +1,7 @@
 <?php
 
+use Illuminate\Support\Facades\Facade;
+
 return [
 
     /*
@@ -188,48 +190,8 @@
     |
     */
 
-    'aliases' => [
-
-        'App' => Illuminate\Support\Facades\App::class,
-        'Arr' => Illuminate\Support\Arr::class,
-        'Artisan' => Illuminate\Support\Facades\Artisan::class,
-        'Auth' => Illuminate\Support\Facades\Auth::class,
-        'Blade' => Illuminate\Support\Facades\Blade::class,
-        'Broadcast' => Illuminate\Support\Facades\Broadcast::class,
-        'Bus' => Illuminate\Support\Facades\Bus::class,
-        'Cache' => Illuminate\Support\Facades\Cache::class,
-        'Config' => Illuminate\Support\Facades\Config::class,
-        'Cookie' => Illuminate\Support\Facades\Cookie::class,
-        'Crypt' => Illuminate\Support\Facades\Crypt::class,
-        'Date' => Illuminate\Support\Facades\Date::class,
-        'DB' => Illuminate\Support\Facades\DB::class,
-        'Eloquent' => Illuminate\Database\Eloquent\Model::class,
-        'Event' => Illuminate\Support\Facades\Event::class,
-        'File' => Illuminate\Support\Facades\File::class,
-        'Gate' => Illuminate\Support\Facades\Gate::class,
-        'Hash' => Illuminate\Support\Facades\Hash::class,
-        'Http' => Illuminate\Support\Facades\Http::class,
-        'Js' => Illuminate\Support\Js::class,
-        'Lang' => Illuminate\Support\Facades\Lang::class,
-        'Log' => Illuminate\Support\Facades\Log::class,
-        'Mail' => Illuminate\Support\Facades\Mail::class,
-        'Notification' => Illuminate\Support\Facades\Notification::class,
-        'Password' => Illuminate\Support\Facades\Password::class,
-        'Queue' => Illuminate\Support\Facades\Queue::class,
-        'RateLimiter' => Illuminate\Support\Facades\RateLimiter::class,
-        'Redirect' => Illuminate\Support\Facades\Redirect::class,
-        // 'Redis' => Illuminate\Support\Facades\Redis::class,
-        'Request' => Illuminate\Support\Facades\Request::class,
-        'Response' => Illuminate\Support\Facades\Response::class,
-        'Route' => Illuminate\Support\Facades\Route::class,
-        'Schema' => Illuminate\Support\Facades\Schema::class,
-        'Session' => Illuminate\Support\Facades\Session::class,
-        'Storage' => Illuminate\Support\Facades\Storage::class,
-        'Str' => Illuminate\Support\Str::class,
-        'URL' => Illuminate\Support\Facades\URL::class,
-        'Validator' => Illuminate\Support\Facades\Validator::class,
-        'View' => Illuminate\Support\Facades\View::class,
-
-    ],
+    'aliases' => Facade::defaultAliases()->merge([
+        // ...
+    ])->toArray(),
 
 ];
diff --git a/tests/LaravelApp/config/broadcasting.php b/tests/LaravelApp/config/broadcasting.php
index 2d52982..67fcbbd 100644
--- a/tests/LaravelApp/config/broadcasting.php
+++ b/tests/LaravelApp/config/broadcasting.php
@@ -39,6 +39,9 @@
                 'cluster' => env('PUSHER_APP_CLUSTER'),
                 'useTLS' => true,
             ],
+            'client_options' => [
+                // Guzzle client options: https://docs.guzzlephp.org/en/stable/request-options.html
+            ],
         ],
 
         'ably' => [
diff --git a/tests/LaravelApp/config/cache.php b/tests/LaravelApp/config/cache.php
index 8736c7a..0ad5c74 100644
--- a/tests/LaravelApp/config/cache.php
+++ b/tests/LaravelApp/config/cache.php
@@ -105,6 +105,6 @@
     |
     */
 
-    'prefix' => env('CACHE_PREFIX', Str::slug(env('APP_NAME', 'laravel'), '_').'_cache'),
+    'prefix' => env('CACHE_PREFIX', Str::slug(env('APP_NAME', 'laravel'), '_').'_cache_'),
 
 ];
diff --git a/tests/LaravelApp/config/database.php b/tests/LaravelApp/config/database.php
index f7bf056..0fe3bdf 100644
--- a/tests/LaravelApp/config/database.php
+++ b/tests/LaravelApp/config/database.php
@@ -81,7 +81,7 @@
             'charset' => 'utf8',
             'prefix' => '',
             'prefix_indexes' => true,
-            'schema' => 'public',
+            'search_path' => 'public',
             'sslmode' => 'prefer',
         ],
 
@@ -136,7 +136,7 @@
         'default' => [
             'url' => env('REDIS_URL'),
             'host' => env('REDIS_HOST', '127.0.0.1'),
-            'password' => env('REDIS_PASSWORD', null),
+            'password' => env('REDIS_PASSWORD'),
             'port' => env('REDIS_PORT', '6379'),
             'database' => env('REDIS_DB', '0'),
         ],
@@ -144,7 +144,7 @@
         'cache' => [
             'url' => env('REDIS_URL'),
             'host' => env('REDIS_HOST', '127.0.0.1'),
-            'password' => env('REDIS_PASSWORD', null),
+            'password' => env('REDIS_PASSWORD'),
             'port' => env('REDIS_PORT', '6379'),
             'database' => env('REDIS_CACHE_DB', '1'),
         ],
diff --git a/tests/LaravelApp/config/filesystems.php b/tests/LaravelApp/config/filesystems.php
index 760ef97..cf5abce 100644
--- a/tests/LaravelApp/config/filesystems.php
+++ b/tests/LaravelApp/config/filesystems.php
@@ -13,7 +13,7 @@
     |
     */
 
-    'default' => env('FILESYSTEM_DRIVER', 'local'),
+    'default' => env('FILESYSTEM_DISK', 'local'),
 
     /*
     |--------------------------------------------------------------------------
diff --git a/tests/LaravelApp/config/logging.php b/tests/LaravelApp/config/logging.php
index 880cd92..fefe088 100644
--- a/tests/LaravelApp/config/logging.php
+++ b/tests/LaravelApp/config/logging.php
@@ -78,10 +78,11 @@
         'papertrail' => [
             'driver' => 'monolog',
             'level' => env('LOG_LEVEL', 'debug'),
-            'handler' => SyslogUdpHandler::class,
+            'handler' => env('LOG_PAPERTRAIL_HANDLER', SyslogUdpHandler::class),
             'handler_with' => [
                 'host' => env('PAPERTRAIL_URL'),
                 'port' => env('PAPERTRAIL_PORT'),
+                'connectionString' => 'tls://'.env('PAPERTRAIL_URL').':'.env('PAPERTRAIL_PORT'),
             ],
         ],
 
diff --git a/tests/LaravelApp/config/mail.php b/tests/LaravelApp/config/mail.php
index f96c6c7..87b6fe3 100644
--- a/tests/LaravelApp/config/mail.php
+++ b/tests/LaravelApp/config/mail.php
@@ -42,7 +42,6 @@
             'username' => env('MAIL_USERNAME'),
             'password' => env('MAIL_PASSWORD'),
             'timeout' => null,
-            'auth_mode' => null,
         ],
 
         'ses' => [
diff --git a/tests/LaravelApp/config/session.php b/tests/LaravelApp/config/session.php
index ac0802b..8fed97c 100644
--- a/tests/LaravelApp/config/session.php
+++ b/tests/LaravelApp/config/session.php
@@ -72,7 +72,7 @@
     |
     */
 
-    'connection' => env('SESSION_CONNECTION', null),
+    'connection' => env('SESSION_CONNECTION'),
 
     /*
     |--------------------------------------------------------------------------
@@ -100,7 +100,7 @@
     |
     */
 
-    'store' => env('SESSION_STORE', null),
+    'store' => env('SESSION_STORE'),
 
     /*
     |--------------------------------------------------------------------------
@@ -155,7 +155,7 @@
     |
     */
 
-    'domain' => env('SESSION_DOMAIN', null),
+    'domain' => env('SESSION_DOMAIN'),
 
     /*
     |--------------------------------------------------------------------------
diff --git a/tests/Orchestra/Commander.php b/tests/Orchestra/Commander.php
index c48ea02..6a58a22 100644
--- a/tests/Orchestra/Commander.php
+++ b/tests/Orchestra/Commander.php
@@ -24,7 +24,7 @@ public static function applicationBasePath()
     public function laravel()
     {
         if (! $this->app) {
-            $this->app = Application::create($this->getBasePath(), null, [
+            $this->app = Application::create(basePath: $this->getBasePath(), options: [
                 'extra' => [
                     'providers' => $this->config['providers'] ?? [],
                     'dont-discover' => $this->config['dont-discover'] ?? [],
diff --git a/tests/TestCase.php b/tests/TestCase.php
index ae64fb4..d87bb98 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -33,7 +33,9 @@ protected function setUp(): void
             if (! is_file("{$this->getBasePath()}/config/envs.php")) {
                 $this->copyEnvsToRoot('.env.non-existent-domain');
 
-                $this->artisan('vendor:publish', ['--tag' => 'envs-config', '--force' => true, ])->run();
+                $this->artisan('vendor:publish', ['--tag' => 'envs-config', '--force' => true, ])
+                     ->assertSuccessful()
+                     ->run();
 
                 $this->app->make(LaravelLoadConfiguration::class)->bootstrap($this->app);
             }
diff --git a/tests/Unit/ArtisanTest.php b/tests/Unit/ArtisanTest.php
index 4b85eaa..2df8154 100644
--- a/tests/Unit/ArtisanTest.php
+++ b/tests/Unit/ArtisanTest.php
@@ -26,6 +26,7 @@ public function using_APP_ROUTES_CACHE_key_to_cache_domain_routes(): void
         $this->updateEnvsConfigFile();
 
         $this->artisan('route:cache', ['--domain' => 'site1.test'])
+             ->assertSuccessful()
              ->expectsOutput(Mockery::pattern('/^Route cache cleared/'))
              ->expectsOutput(Mockery::pattern('/^Routes cached successfully/'));
 
@@ -40,9 +41,11 @@ public function using_APP_ROUTES_CACHE_key_to_cache_domain_routes(): void
         self::assertSame($this->app->getCachedRoutesPath(), $cachedRoutesFilename);
 
         $this->get('http://site1.test')
+             ->assertSuccessful()
              ->assertSeeText('site1.test/');
 
         $this->get('http://site1.test/other')
+             ->assertSuccessful()
              ->assertSeeText('site1.test/other');
 
         $this->get('http://site2.test')
@@ -71,6 +74,7 @@ public function using_APP_ROUTES_CACHE_key_to_cache_domain_routes(): void
     public function cache_all_routes_when_domain_does_not_exist(): void
     {
         $this->artisan('route:cache')
+             ->assertSuccessful()
              ->expectsOutput(Mockery::pattern('/^Route cache cleared/'))
              ->expectsOutput(Mockery::pattern('/^Routes cached successfully/'));
 
@@ -87,12 +91,15 @@ public function cache_all_routes_when_domain_does_not_exist(): void
         self::assertSame($this->app->getCachedRoutesPath(), $cachedRoutesFilename);
 
         $this->get('http://site1.test')
+             ->assertSuccessful()
              ->assertSeeText('site1.test/');
 
         $this->get('http://site2.test/')
+             ->assertSuccessful()
              ->assertSeeText('site2.test/');
 
         $this->get('http://other-domain.test/')
+             ->assertSuccessful()
              ->assertSeeText('other-domain.test/');
     }
 
@@ -119,6 +126,7 @@ public function using_APP_CONFIG_CACHE_key_to_cache_domain_configs(): void
         // $consoleOutput = $this->runArtisan('config:cache', '--domain=site-XYZ.test')->getOutput();
 
         $this->artisan('config:cache', ['--domain' => 'site2.test'])
+             ->assertSuccessful()
              ->expectsOutput(Mockery::pattern('/^Configuration cache cleared/'))
              ->expectsOutput(Mockery::pattern('/^Configuration cached successfully/'))
              ->run();
@@ -138,6 +146,7 @@ public function using_APP_CONFIG_CACHE_key_to_cache_domain_configs(): void
         Env::getRepository()->clear('APP_CONFIG_CACHE');
 
         $this->artisan('config:cache', ['--domain' => 'site1.test'])
+             ->assertSuccessful()
              ->expectsOutput(Mockery::pattern('/^Configuration cache cleared/'))
              ->expectsOutput(Mockery::pattern('/^Configuration cached successfully/'))
              ->run();
@@ -162,6 +171,7 @@ public function using_APP_CONFIG_CACHE_key_to_cache_domain_configs(): void
     public function cache_all_configs_when_domain_does_not_exist(): void
     {
         $this->artisan('config:cache')
+             ->assertSuccessful()
              ->expectsOutput(Mockery::pattern('/^Configuration cache cleared/'))
              ->expectsOutput(Mockery::pattern('/^Configuration cached successfully/'));
 
diff --git a/tests/Unit/HttpTest.php b/tests/Unit/HttpTest.php
index 6f4f069..4a5707a 100644
--- a/tests/Unit/HttpTest.php
+++ b/tests/Unit/HttpTest.php
@@ -16,11 +16,9 @@ protected function setUp(): void
     {
         parent::setUp();
 
-        Route::domain('site2.test')->group(function () {
-            Route::get('domain-route', function () {
-                return response()->json(config('domain'));
-            })->middleware(['api']);
-        });
+        Route::domain('site2.test')
+             ->get('domain-route', fn () => response()->json(config('domain')))
+             ->middleware(['api']);
     }
 
     /**
@@ -43,6 +41,7 @@ public function custom_domain_env_filename(): void
         // $this->refreshConfiguration();
 
         $this->getJson('http://site2.test/domain-route')
+             ->assertSuccessful()
              ->assertJson($this->getFixture('env.site2')['domain']);
     }
 }