diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index 9635d1b..dc17090 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -5,20 +5,25 @@ on: [push]
 jobs:
   test:
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        php: [8.3, 8.4]
+    name: PHP ${{ matrix.php }}
     steps:
       - name: Checkout code
-        uses: actions/checkout@v1
+        uses: actions/checkout@v4
 
       - name: Cache dependencies
-        uses: actions/cache@v1
+        uses: actions/cache@v4
         with:
           path: ~/.composer/cache/files
-          key: dependencies-composer-${{ hashFiles('composer.json') }}
+          key: dependencies-composer-${{ matrix.php }}-${{ hashFiles('composer.json') }}
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:
-          php-version: 8.1
+          php-version: ${{ matrix.php }}
           extensions: dom, curl, libxml, mbstring, zip, pcntl, pdo, sqlite, pdo_sqlite, bcmath, soap, intl, gd, exif, iconv, imagick
           coverage: none
         env:
diff --git a/.gitignore b/.gitignore
index 8f4861d..b70e2c4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,8 @@ composer.lock
 vendor
 coverage
 .phpunit.result.cache
+
+#nix dev env
+.envrc
+.devenv
+.direnv
\ No newline at end of file
diff --git a/composer.json b/composer.json
index 7a6856f..5b74b6b 100644
--- a/composer.json
+++ b/composer.json
@@ -1,92 +1,101 @@
 {
-    "name": "spatie/laravel-blade-x",
-    "description": "Supercharged Blade components",
-    "keywords": [
-        "spatie",
-        "blade",
-        "components",
-        "html",
-        "laravel-blade-x"
-    ],
-    "homepage": "https://github.com/spatie/laravel-blade-x",
-    "license": "MIT",
-    "authors": [
-        {
-            "name": "Sebastian De Deyne",
-            "email": "sebastian@spatie.be",
-            "homepage": "https://spatie.be",
-            "role": "Developer"
-        },
-        {
-            "name": "Brent Roose",
-            "email": "brent@spatie.be",
-            "homepage": "https://spatie.be",
-            "role": "Developer"
-        },
-        {
-            "name": "Ruben Van Assche",
-            "email": "ruben@spatie.be",
-            "homepage": "https://spatie.be",
-            "role": "Developer"
-        },
-        {
-            "name": "Freek Van der Herten",
-            "email": "freek@spatie.be",
-            "homepage": "https://spatie.be",
-            "role": "Developer"
-        },
-        {
-            "name": "Alex Vanderbist",
-            "email": "alex@spatie.be",
-            "homepage": "https://spatie.be",
-            "role": "Developer"
-        }
-    ],
-    "require": {
-        "php": "^7.2|^8.1",
-        "laravel/framework": ">=4.1,<4.3",
-        "symfony/filesystem": "^6.4"
+  "name": "spatie/laravel-blade-x",
+  "description": "Supercharged Blade components",
+  "keywords": [
+    "spatie",
+    "blade",
+    "components",
+    "html",
+    "laravel-blade-x"
+  ],
+  "homepage": "https://github.com/spatie/laravel-blade-x",
+  "license": "MIT",
+  "authors": [
+    {
+      "name": "Sebastian De Deyne",
+      "email": "sebastian@spatie.be",
+      "homepage": "https://spatie.be",
+      "role": "Developer"
     },
-    "require-dev": {
-        "anlutro/l4-testing": "dev-master",
-        "laravel/laravel": "dev-master",
-        "phpunit/phpunit": "^9.5"
+    {
+      "name": "Brent Roose",
+      "email": "brent@spatie.be",
+      "homepage": "https://spatie.be",
+      "role": "Developer"
     },
-    "autoload": {
-        "files": [
-            "src/Laravel/helpers.php"
-        ],
-        "psr-4": {
-            "Spatie\\BladeX\\": "src"
-        }
+    {
+      "name": "Ruben Van Assche",
+      "email": "ruben@spatie.be",
+      "homepage": "https://spatie.be",
+      "role": "Developer"
     },
-    "autoload-dev": {
-        "psr-4": {
-            "Spatie\\BladeX\\Tests\\": "tests"
-        }
+    {
+      "name": "Freek Van der Herten",
+      "email": "freek@spatie.be",
+      "homepage": "https://spatie.be",
+      "role": "Developer"
     },
-    "scripts": {
-        "test": "vendor/bin/phpunit",
-        "test-coverage": "vendor/bin/phpunit --coverage-html coverage"
+    {
+      "name": "Alex Vanderbist",
+      "email": "alex@spatie.be",
+      "homepage": "https://spatie.be",
+      "role": "Developer"
+    }
+  ],
+  "require": {
+    "php": "^7.2|^8.1",
+    "laravel/framework": ">=4.1,<4.3",
+    "symfony/filesystem": "^6.4"
+  },
+  "require-dev": {
+    "laravel/laravel": "dev-master",
+    "phpunit/phpunit": "^9.5",
+    "rector/rector": "^2.5"
+  },
+  "autoload": {
+    "files": [
+      "src/Laravel/helpers.php"
+    ],
+    "psr-4": {
+      "Spatie\\BladeX\\": "src"
+    }
+  },
+  "autoload-dev": {
+    "psr-4": {
+      "Spatie\\BladeX\\Tests\\": "tests"
+    }
+  },
+  "scripts": {
+    "test": "vendor/bin/phpunit",
+    "test-coverage": "vendor/bin/phpunit --coverage-html coverage"
+  },
+  "config": {
+    "sort-packages": true,
+    "allow-plugins": {
+      "kylekatarnls/update-helper": true
     },
-    "config": {
-        "sort-packages": true,
-        "allow-plugins": {
-            "kylekatarnls/update-helper": true
-        }
+    "audit": {
+      "ignore": {
+        "PKSA-8qx3-n5y5-vvnd": "nested array validation with wildcard is not supported in laravel 4.2",
+        "PKSA-w7xr-vk7n-rstm": "affected only when register_argc_argv is 'on' in php.ini",
+        "PKSA-3qhw-gzjt-j63j": "affected only laravel 5.5.40 and 5.6.x through 5.6.29",
+        "PKSA-17kp-jm2n-vxzz": "there is no link() function in Laravel 4.2 Filesystem/Filesystem.php",
+        "PKSA-7ywf-hktb-jkn9": "JSON nested attribute handling not implemented in 4.2, JSON columns is treated as string in 4.2",
+        "PKSA-njrm-6dtg-m2pc": "this is only affected newer blade engine such as laravel >5.x because it use hashed parent placeholder and inserted into raw HTML",
+        "PKSA-nrj3-r2wg-yt8b": "this is only affected when we use 'cookie' driver in session ",
+        "PKSA-m5cs-t1y6-qpcs": "update or not update still vulnerable, because affected to < 12.61.1",
+        "PKSA-3r5d-mb8f-1qw9": "update or not update still vulnerable, because affected to < 12.60.0"
+      }
+    }
+  },
+  "repositories": [
+    {
+      "type": "vcs",
+      "url": "https://github.com/dicoding-dev/L42x"
     },
-    "repositories": [
-        {
-            "type": "vcs",
-            "url": "https://github.com/dicoding-dev/L42x"
-        },
-        {
-            "type": "vcs",
-            "url": "https://github.com/dicoding-dev/L42x-app"
-        },
-        {
-            "type": "vcs",
-            "url": "https://github.com/dicoding-dev/laravel-testing"
-        }
-    ]
+    {
+      "type": "vcs",
+      "url": "https://github.com/dicoding-dev/L42x-app"
+    }
+  ]
 }
diff --git a/rector.php b/rector.php
new file mode 100644
index 0000000..8340db8
--- /dev/null
+++ b/rector.php
@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+use Rector\Config\RectorConfig;
+use Rector\Php83\Rector\BooleanAnd\JsonValidateRector;
+use Rector\Php83\Rector\ClassConst\AddTypeToConstRector;
+use Rector\Php83\Rector\ClassMethod\AddOverrideAttributeToOverriddenMethodsRector;
+use Rector\Php83\Rector\FuncCall\CombineHostPortLdapUriRector;
+use Rector\Php83\Rector\FuncCall\DynamicClassConstFetchRector;
+use Rector\Php83\Rector\FuncCall\RemoveGetClassGetParentClassNoArgsRector;
+use Rector\Php83\Rector\Class_\ReadOnlyAnonymousClassRector;
+use Rector\Php84\Rector\FuncCall\AddEscapeArgumentRector;
+use Rector\Php84\Rector\Param\ExplicitNullableParamTypeRector;
+
+return RectorConfig::configure()
+    ->withPhpVersion(80400)
+    ->withPaths([
+        __DIR__ . '/src',
+        __DIR__ . '/tests',
+    ])
+    ->withRules([
+        DynamicClassConstFetchRector::class,
+        CombineHostPortLdapUriRector::class,
+        RemoveGetClassGetParentClassNoArgsRector::class,
+        JsonValidateRector::class,
+        AddTypeToConstRector::class,
+        ReadOnlyAnonymousClassRector::class,
+        AddOverrideAttributeToOverriddenMethodsRector::class,
+        ExplicitNullableParamTypeRector::class,
+        AddEscapeArgumentRector::class,
+    ]);
diff --git a/src/BladeXServiceProvider.php b/src/BladeXServiceProvider.php
index 7f2f78d..cda476d 100644
--- a/src/BladeXServiceProvider.php
+++ b/src/BladeXServiceProvider.php
@@ -7,6 +7,7 @@
 
 class BladeXServiceProvider extends ViewServiceProvider
 {
+    #[\Override]
     public function register()
     {
         parent::register();
@@ -19,6 +20,7 @@ public function register()
         $this->registerBladeXCompiler();
     }
 
+    #[\Override]
     public function registerFactory()
     {
         $this->app->bindShared('view', function($app) {
@@ -35,6 +37,7 @@ public function registerFactory()
         });
     }
 
+    #[\Override]
     public function registerBladeEngine($resolver)
     {
 		$this->app->bindShared('blade.compiler', function($app)
diff --git a/src/ComponentDirectory/NamespacedDirectory.php b/src/ComponentDirectory/NamespacedDirectory.php
index bdb09a0..0e0e082 100644
--- a/src/ComponentDirectory/NamespacedDirectory.php
+++ b/src/ComponentDirectory/NamespacedDirectory.php
@@ -32,6 +32,7 @@ public function getAbsoluteDirectory(): string
         return $viewPath ? "{$absoluteDirectory}/{$viewPath}" : $absoluteDirectory;
     }
 
+    #[\Override]
     public function getViewName(SplFileInfo $viewFile): string
     {
         return "{$this->namespace}::".parent::getViewName($viewFile);
diff --git a/src/Laravel/Collection.php b/src/Laravel/Collection.php
index bd59620..1bbb981 100644
--- a/src/Laravel/Collection.php
+++ b/src/Laravel/Collection.php
@@ -7,7 +7,8 @@
 
 class Collection extends L4Collection
 {
-    public function filter(Closure $callback = null)
+    #[\Override]
+    public function filter(?Closure $callback = null)
     {
         if ($callback) {
             // return new static(Arr::where($this->items, $callback));
@@ -17,6 +18,7 @@ public function filter(Closure $callback = null)
         return new static(array_filter($this->items));
     }
 
+    #[\Override]
     public function implode($value, $glue = null)
     {
         $first = $this->first();
@@ -28,6 +30,7 @@ public function implode($value, $glue = null)
         return implode($value, $this->items);
     }
 
+    #[\Override]
     public function mapWithKeys(callable $callback)
     {
         $result = [];
@@ -48,6 +51,7 @@ public function pluck($value, $key = null)
         return new static(array_pluck($this->items, $value, $key));
     }
 
+    #[\Override]
     public function unique($key = null, $strict = false)
     {
         $callback = $this->valueRetriever($key);
@@ -63,6 +67,7 @@ public function unique($key = null, $strict = false)
         });
     }
 
+    #[\Override]
     public function reject($callback)
 	{
         $useAsCallable = $this->useAsCallable($callback);
@@ -74,11 +79,13 @@ public function reject($callback)
         });
     }
 
+    #[\Override]
     protected function useAsCallable($value)
     {
         return ! is_string($value) && is_callable($value);
     }
 
+    #[\Override]
     protected function valueRetriever($value)
     {
         if ($this->useAsCallable($value)) {
diff --git a/tests/Features/Registration/TestClasses/SelectViewModel.php b/tests/Features/Registration/TestClasses/SelectViewModel.php
index ecc0f41..7edfb89 100644
--- a/tests/Features/Registration/TestClasses/SelectViewModel.php
+++ b/tests/Features/Registration/TestClasses/SelectViewModel.php
@@ -15,7 +15,7 @@ class SelectViewModel extends ViewModel
     /** @var string */
     private $selected;
 
-    public function __construct(string $name, array $options, string $selected = null)
+    public function __construct(string $name, array $options, ?string $selected = null)
     {
         $this->name = $name;
 
diff --git a/tests/Features/ViewModel/TestClasses/SelectFieldViewModel.php b/tests/Features/ViewModel/TestClasses/SelectFieldViewModel.php
index 03309e5..0ea7a44 100644
--- a/tests/Features/ViewModel/TestClasses/SelectFieldViewModel.php
+++ b/tests/Features/ViewModel/TestClasses/SelectFieldViewModel.php
@@ -19,7 +19,7 @@ class SelectFieldViewModel extends ViewModel
      * @todo $name and $options should not have default value
      * need to revert back after solving the test problem
      */
-    public function __construct(string $name = '', array $options = [], string $selected = null)
+    public function __construct(string $name = '', array $options = [], ?string $selected = null)
     {
         $this->name = $name;
 
diff --git a/tests/TestCase.php b/tests/TestCase.php
index 571332b..01224b6 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -11,10 +11,23 @@
 use Spatie\BladeX\Facades\BladeX;
 use Spatie\BladeX\Tests\SnapshotAssertions\MatchesSnapshots;
 
-abstract class TestCase extends \anlutro\LaravelTesting\PkgAppTestCase
+abstract class TestCase extends \Illuminate\Foundation\Testing\TestCase
 {
     use MatchesSnapshots;
 
+    // ponytail: inlined from anlutro/l4-testing PkgAppTestCase (only the <5.0 branch we use)
+    public function createApplication(): Application
+    {
+        $unitTesting = true;
+        $testEnvironment = 'testing';
+
+        $app = new Application();
+        $app->bindInstallPaths(require $this->getVendorPath() . '/laravel/laravel/bootstrap/paths.php');
+        require Application::getBootstrapFile();
+
+        return $app;
+    }
+
     protected function setUp(): void
     {
         parent::setUp();