diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 5e48b9a..2f51048 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -34,7 +34,7 @@ jobs:
       JBZOO_COMPOSER_UPDATE_FLAGS: ${{ matrix.composer_flags }}
     strategy:
       matrix:
-        php-version: [ 8.1, 8.2, 8.3 ]
+        php-version: [ 8.1, 8.2, 8.3, 8.4 ]
         coverage: [ xdebug, none ]
         composer_flags: [ "--prefer-lowest", "" ]
     steps:
@@ -65,7 +65,7 @@ jobs:
         run: make report-coveralls --no-print-directory || true
 
       - name: Upload Artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         continue-on-error: true
         with:
           name: PHPUnit - ${{ matrix.php-version }} - ${{ matrix.coverage }}
@@ -77,7 +77,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php-version: [ 8.1, 8.2, 8.3 ]
+        php-version: [ 8.1, 8.2, 8.3, 8.4 ]
     steps:
       - name: Checkout code
         uses: actions/checkout@v3
@@ -99,7 +99,7 @@ jobs:
         run: make codestyle --no-print-directory
 
       - name: Upload Artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         continue-on-error: true
         with:
           name: Linters - ${{ matrix.php-version }}
@@ -111,7 +111,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php-version: [ 8.1, 8.2, 8.3 ]
+        php-version: [ 8.1, 8.2, 8.3, 8.4 ]
     steps:
       - name: Checkout code
         uses: actions/checkout@v3
@@ -133,7 +133,7 @@ jobs:
         run: make report-all --no-print-directory
 
       - name: Upload Artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         continue-on-error: true
         with:
           name: Reports - ${{ matrix.php-version }}
diff --git a/composer.json b/composer.json
index d3a2654..377ea5c 100644
--- a/composer.json
+++ b/composer.json
@@ -34,16 +34,16 @@
     "prefer-stable"     : true,
 
     "require"           : {
-        "php"                                 : "^8.1",
+        "php"                               : "^8.1",
 
-        "jbzoo/utils"                         : "^7.1",
-        "jbzoo/event"                         : "^7.0",
+        "jbzoo/utils"                       : "^7.1",
+        "jbzoo/event"                       : "^7.0",
 
-        "symfony/process"                     : ">=6.4",
-        "symfony/console"                     : ">=6.4",
-        "symfony/lock"                        : ">=6.4",
-        "bluepsyduck/symfony-process-manager" : ">=1.3.3",
-        "monolog/monolog"                     : "^3.4"
+        "symfony/process"                   : ">=6.4",
+        "symfony/console"                   : ">=6.4",
+        "symfony/lock"                      : ">=6.4",
+        "smetdenis/symfony-process-manager" : ">=1.3.3",
+        "monolog/monolog"                   : "^3.4"
     },
 
     "require-dev"       : {
diff --git a/phpstan.neon b/phpstan.neon
new file mode 100644
index 0000000..82f9e88
--- /dev/null
+++ b/phpstan.neon
@@ -0,0 +1,19 @@
+#
+# JBZoo Toolbox - Cli.
+#
+# This file is part of the JBZoo Toolbox project.
+# For the full copyright and license information, please view the LICENSE
+# file that was distributed with this source code.
+#
+# @license    MIT
+# @copyright  Copyright (C) JBZoo.com, All rights reserved.
+# @see        https://github.com/JBZoo/Cli
+#
+
+includes:
+    - ./vendor/phpstan/phpstan-strict-rules/rules.neon
+
+parameters:
+    level: max
+    checkExplicitMixed: false
+    reportUnmatchedIgnoredErrors: false
diff --git a/tests/CliPackageTest.php b/tests/CliPackageTest.php
index 076ad07..113baa5 100644
--- a/tests/CliPackageTest.php
+++ b/tests/CliPackageTest.php
@@ -26,4 +26,19 @@ protected function setUp(): void
 
         $this->excludePaths[] = '.github/assets';
     }
+
+    protected static function phpVersions(): array
+    {
+        return [8.1, 8.2, 8.3, 8.4];
+    }
+
+    protected static function uploadArtifactsStep(string $stepName): array
+    {
+        return [
+            'name'              => 'Upload Artifacts',
+            'uses'              => 'actions/upload-artifact@v4',
+            'continue-on-error' => true,
+            'with'              => ['name' => $stepName, 'path' => 'build/'],
+        ];
+    }
 }