diff --git a/.github/workflows/code_analysis.yaml b/.github/workflows/code_analysis.yaml
index 06f4c04..eca3935 100644
--- a/.github/workflows/code_analysis.yaml
+++ b/.github/workflows/code_analysis.yaml
@@ -40,14 +40,14 @@ jobs:
         runs-on: ubuntu-latest
 
         steps:
-            -   uses: actions/checkout@v3
+            -   uses: actions/checkout@v4
             # see https://github.com/shivammathur/setup-php
             -   uses: shivammathur/setup-php@v2
                 with:
-                    php-version: 8.1
+                    php-version: 8.4
                     coverage: none
 
             # composer install cache - https://github.com/ramsey/composer-install
-            -   uses: "ramsey/composer-install@v2"
+            -   uses: "ramsey/composer-install@v3"
 
             -   run: ${{ matrix.actions.run }}
diff --git a/README.md b/README.md
index 3583877..3fd8186 100644
--- a/README.md
+++ b/README.md
@@ -10,16 +10,10 @@ Speed up development of your PHP CLI Apps. Includes [7 Steps to Start with Paral
 composer require symplify/easy-parallel --dev
 ```
 
-## Usage
-
-@todo
-
-<br>
-
 ## Report Issues
 
-In case you are experiencing a bug or want to request a new feature head over to the [Symplify monorepo issue tracker](https://github.com/symplify/symplify/issues)
+In case you are experiencing a bug or want to request a new feature, head over to the [issue tracker](https://github.com/symplify/easy-parallel/issues).
 
 ## Contribute
 
-The sources of this package are contained in the Symplify monorepo. We welcome contributions for this package on [symplify/symplify](https://github.com/symplify/symplify).
+We welcome contributions. Open a pull request on [symplify/easy-parallel](https://github.com/symplify/easy-parallel).
diff --git a/composer.json b/composer.json
index 92d9371..d0fe6f5 100644
--- a/composer.json
+++ b/composer.json
@@ -3,20 +3,21 @@
     "description": "Helper package for easier CLI project parallelization",
     "license": "MIT",
     "require": {
-        "php": ">=8.1",
+        "php": ">=8.4",
         "clue/ndjson-react": "^1.3",
-        "fidry/cpu-core-counter": "^0.5.1|^1.1",
-        "nette/utils": "^3.2|^4.0",
+        "fidry/cpu-core-counter": "^1.3",
+        "nette/utils": "^4.1",
         "react/child-process": "^0.6.5",
-        "react/event-loop": "^1.5",
-        "react/socket": "^1.15",
-        "symfony/console": "^6.2|^7.0"
+        "react/event-loop": "^1.6",
+        "react/socket": "^1.17",
+        "symfony/console": "^6.0|^7.0|^8.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^10.5",
-        "rector/rector": "^1.0",
-        "symplify/easy-coding-standard": "^12.1",
-        "tomasvotruba/class-leak": "^0.2.6"
+        "phpunit/phpunit": "^13.2",
+        "rector/jack": "^1.0",
+        "rector/rector": "^2.4.5",
+        "symplify/easy-coding-standard": "^13.2.1",
+        "tomasvotruba/class-leak": "^2.1"
     },
     "autoload": {
         "psr-4": {
diff --git a/ecs.php b/ecs.php
index 00d9e79..7802a43 100644
--- a/ecs.php
+++ b/ecs.php
@@ -5,10 +5,6 @@
 use Symplify\EasyCodingStandard\Config\ECSConfig;
 
 return ECSConfig::configure()
-    ->withPaths([
-        __DIR__ . '/config',
-        __DIR__ . '/src',
-        __DIR__ . '/tests',
-    ])
+    ->withPaths([__DIR__ . '/config', __DIR__ . '/src', __DIR__ . '/tests'])
     ->withRootFiles()
-    ->withPreparedSets(common: true, psr12: true);
+    ->withPreparedSets(common: true, psr12: true, symplify: true);
diff --git a/rector.php b/rector.php
index 41f1359..9964258 100644
--- a/rector.php
+++ b/rector.php
@@ -5,14 +5,15 @@
 use Rector\Config\RectorConfig;
 
 return RectorConfig::configure()
-    ->withPreparedSets(codeQuality: true, deadCode: true, codingStyle: true, naming: true, privatization: true, earlyReturn: true)
-    ->withPaths([
-        __DIR__ . '/config',
-        __DIR__ . '/src',
-        __DIR__ . '/tests',
-    ])
+    ->withPreparedSets(
+        codeQuality: true,
+        deadCode: true,
+        codingStyle: true,
+        naming: true,
+        privatization: true,
+        earlyReturn: true
+    )
+    ->withPaths([__DIR__ . '/config', __DIR__ . '/src', __DIR__ . '/tests'])
     ->withImportNames(removeUnusedImports: true)
     ->withPhpSets()
-    ->withSkip([
-        '*/Source/*',
-    ]);
+    ->withSkip(['*/Source/*']);
diff --git a/src/CommandLine/WorkerCommandLineFactory.php b/src/CommandLine/WorkerCommandLineFactory.php
index 3f6510d..b363fad 100644
--- a/src/CommandLine/WorkerCommandLineFactory.php
+++ b/src/CommandLine/WorkerCommandLineFactory.php
@@ -13,21 +13,18 @@
  * @api
  * @see \Symplify\EasyParallel\Tests\CommandLine\WorkerCommandLineFactoryTest
  */
-final class WorkerCommandLineFactory
+final readonly class WorkerCommandLineFactory
 {
-    /**
-     * @var string
-     */
-    private const OPTION_DASHES = '--';
+    private const string OPTION_DASHES = '--';
 
     /**
      * These options are not relevant for nested worker command line.
      *
      * @var string[]
      */
-    private const EXCLUDED_OPTION_NAMES = ['output-format'];
+    private const array EXCLUDED_OPTION_NAMES = ['output-format'];
 
-    private readonly CommandFromReflectionFactory $commandFromReflectionFactory;
+    private CommandFromReflectionFactory $commandFromReflectionFactory;
 
     public function __construct()
     {
diff --git a/src/CpuCoreCountProvider.php b/src/CpuCoreCountProvider.php
index 2ba4cdb..984ca79 100644
--- a/src/CpuCoreCountProvider.php
+++ b/src/CpuCoreCountProvider.php
@@ -12,15 +12,13 @@
  */
 final class CpuCoreCountProvider
 {
-    /**
-     * @var int
-     */
-    private const DEFAULT_CORE_COUNT = 2;
+    private const int DEFAULT_CORE_COUNT = 2;
 
     public function provide(): int
     {
         try {
-            return (new CpuCoreCounter())->getCount();
+            return new CpuCoreCounter()
+                ->getCount();
         } catch (NumberOfCpuCoreNotFound) {
             return self::DEFAULT_CORE_COUNT;
         }
diff --git a/src/Enum/Action.php b/src/Enum/Action.php
index 24d90fa..ba82ad1 100644
--- a/src/Enum/Action.php
+++ b/src/Enum/Action.php
@@ -9,18 +9,9 @@
  */
 final class Action
 {
-    /**
-     * @var string
-     */
-    public const HELLO = 'hello';
+    public const string HELLO = 'hello';
 
-    /**
-     * @var string
-     */
-    public const MAIN = 'main';
+    public const string MAIN = 'main';
 
-    /**
-     * @var string
-     */
-    public const RESULT = 'result';
+    public const string RESULT = 'result';
 }
diff --git a/src/Enum/Content.php b/src/Enum/Content.php
index a7fea16..d3a6f20 100644
--- a/src/Enum/Content.php
+++ b/src/Enum/Content.php
@@ -9,13 +9,7 @@
  */
 final class Content
 {
-    /**
-     * @var string
-     */
-    public const RESULT = 'result';
+    public const string RESULT = 'result';
 
-    /**
-     * @var string
-     */
-    public const FILES = 'files';
+    public const string FILES = 'files';
 }
diff --git a/src/Enum/ReactCommand.php b/src/Enum/ReactCommand.php
index 7988129..cfe6230 100644
--- a/src/Enum/ReactCommand.php
+++ b/src/Enum/ReactCommand.php
@@ -9,13 +9,7 @@
  */
 final class ReactCommand
 {
-    /**
-     * @var string
-     */
-    public const ACTION = 'action';
+    public const string ACTION = 'action';
 
-    /**
-     * @var string
-     */
-    public const IDENTIFIER = 'identifier';
+    public const string IDENTIFIER = 'identifier';
 }
diff --git a/src/Enum/ReactEvent.php b/src/Enum/ReactEvent.php
index b57cc5d..3906d51 100644
--- a/src/Enum/ReactEvent.php
+++ b/src/Enum/ReactEvent.php
@@ -9,23 +9,11 @@
  */
 final class ReactEvent
 {
-    /**
-     * @var string
-     */
-    public const EXIT = 'exit';
+    public const string EXIT = 'exit';
 
-    /**
-     * @var string
-     */
-    public const DATA = 'data';
+    public const string DATA = 'data';
 
-    /**
-     * @var string
-     */
-    public const ERROR = 'error';
+    public const string ERROR = 'error';
 
-    /**
-     * @var string
-     */
-    public const CONNECTION = 'connection';
+    public const string CONNECTION = 'connection';
 }
diff --git a/src/ValueObject/EasyParallelConfig.php b/src/ValueObject/EasyParallelConfig.php
index d04f8ca..ed9fba6 100644
--- a/src/ValueObject/EasyParallelConfig.php
+++ b/src/ValueObject/EasyParallelConfig.php
@@ -9,8 +9,5 @@
  */
 final class EasyParallelConfig
 {
-    /**
-     * @var string
-     */
-    public const FILE_PATH = __DIR__ . '/../../config/config.php';
+    public const string FILE_PATH = __DIR__ . '/../../config/config.php';
 }
diff --git a/src/ValueObject/Schedule.php b/src/ValueObject/Schedule.php
index ca1c92f..678e20a 100644
--- a/src/ValueObject/Schedule.php
+++ b/src/ValueObject/Schedule.php
@@ -10,14 +10,14 @@
  *
  * @api
  */
-final class Schedule
+final readonly class Schedule
 {
     /**
      * @param array<array<string>> $jobs
      */
     public function __construct(
-        private readonly int $numberOfProcesses,
-        private readonly array $jobs
+        private int $numberOfProcesses,
+        private array $jobs
     ) {
     }
 
diff --git a/tests/CommandLine/WorkerCommandLineFactoryTest.php b/tests/CommandLine/WorkerCommandLineFactoryTest.php
index ad1b372..9b92f35 100644
--- a/tests/CommandLine/WorkerCommandLineFactoryTest.php
+++ b/tests/CommandLine/WorkerCommandLineFactoryTest.php
@@ -5,6 +5,7 @@
 namespace Symplify\EasyParallel\Tests\CommandLine;
 
 use Iterator;
+use Override;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\Console\Command\Command;
@@ -18,20 +19,15 @@
 
 final class WorkerCommandLineFactoryTest extends TestCase
 {
-    /**
-     * @var string
-     */
-    private const COMMAND = 'command';
+    private const string COMMAND = 'command';
 
-    /**
-     * @var string
-     */
-    private const DUMMY_MAIN_SCRIPT = 'main_script';
+    private const string DUMMY_MAIN_SCRIPT = 'main_script';
 
     private WorkerCommandLineFactory $workerCommandLineFactory;
 
     private CommandFromReflectionFactory $commandFromReflectionFactory;
 
+    #[Override]
     protected function setUp(): void
     {
         $this->workerCommandLineFactory = new WorkerCommandLineFactory();