diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 7421706..7a62b96 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -1,152 +1,148 @@
 name: CI
 
 on:
-    pull_request:
-    push:
-        branches:
-            - 'main'
+  pull_request:
+  push:
+    branches:
+      - 'main'
 
 jobs:
-    composer-validate:
-        runs-on: ubuntu-latest
-        name: "Composer Validate"
-        steps:
-            - name: 'Checkout Code'
-              uses: actions/checkout@v2
-
-            - name: 'Validate composer.json'
-              run: composer validate --no-check-all --strict --no-check-lock
-
-    composer-install:
-        needs: composer-validate
-        runs-on: ubuntu-latest
-        name: "Composer Install"
-        steps:
-            - name: 'Checkout Code'
-              uses: actions/checkout@v2
-
-            - name: 'Install Dependencies'
-              run: composer install --prefer-dist --no-progress --no-interaction
-
-    code-style:
-        needs: composer-install
-        runs-on: ubuntu-latest
-        name: "Code Style"
-        strategy:
-            fail-fast: false
-        steps:
-            - name: 'Checkout Code'
-              uses: actions/checkout@v2
-
-            - name: 'Setup PHP'
-              uses: shivammathur/setup-php@v2
-              with:
-                  php-version: 8.1
-                  ini-values: memory_limit=-1
-                  coverage: none
-                  tools: composer:v2
-
-            - name: 'Install PHP dependencies with Composer'
-              run: composer install --prefer-dist --no-progress --optimize-autoloader
-              working-directory: './'
-
-            - name: 'Run CodeSniffer'
-              run: ./vendor/bin/phpcs ./ -p --encoding=utf-8 --extensions=php --ignore="vendor|Tests|src|public" --standard=./vendor/escapestudios/symfony2-coding-standard/Symfony
-
-    static-analysis:
-        needs: composer-install
-        runs-on: ubuntu-latest
-        name: "Static Analysis"
-        strategy:
-            fail-fast: false
-        steps:
-            - name: 'Checkout Code'
-              uses: actions/checkout@v2
-
-            - name: 'Setup PHP'
-              uses: shivammathur/setup-php@v2
-              with:
-                  php-version: 8.1
-                  ini-values: memory_limit=-1
-                  coverage: none
-                  tools: composer:v2
-
-            - name: 'Install PHP dependencies with Composer'
-              run: composer install --prefer-dist --no-progress --optimize-autoloader
-              working-directory: './'
-
-            - name: 'Run PHPStan'
-              run: ./vendor/bin/phpstan analyse --no-progress -c phpstan.neon ./
-
-    test:
-        needs: composer-install
-        runs-on: ubuntu-latest
-        name: "Tests (PHP ${{ matrix.php-version }} / Symfony ${{ matrix.symfony-version }})"
-        strategy:
-            fail-fast: false
-            matrix:
-                php-version:
-                    - '7.4'
-                    - '8.0'
-                    - '8.1'
-                symfony-version:
-                    - '5.3'
-                    - '5.4'
-                    - '6.0'
-        steps:
-            - name: 'Checkout Code'
-              uses: actions/checkout@v2
-
-            - name: 'Setup PHP'
-              uses: shivammathur/setup-php@v2
-              with:
-                  php-version: ${{ matrix.php-version }}
-                  ini-values: memory_limit=-1
-                  coverage: none
-                  tools: composer:v2
-              env:
-                  SYMFONY_VERSION: ${{ matrix.symfony-version }}
-
-            - name: 'Install PHP dependencies with Composer'
-              run: composer install --prefer-dist --no-progress --optimize-autoloader
-              working-directory: './'
-
-            - name: 'Run PHPUnit'
-              run: ./vendor/bin/phpunit -v -c phpunit.xml.dist
-
-    code-coverage:
-        needs: test
-        runs-on: ubuntu-latest
-        name: "Code Coverage"
-        strategy:
-            fail-fast: false
-        steps:
-            - name: 'Checkout Code'
-              uses: actions/checkout@v2
-
-            - name: 'Setup PHP'
-              uses: shivammathur/setup-php@v2
-              with:
-                  php-version: 8.1
-                  ini-values: memory_limit=-1
-                  coverage: pcov
-                  tools: composer:v2
-
-            - name: 'Install PHP dependencies with Composer'
-              run: composer install --prefer-dist --no-progress --optimize-autoloader
-              working-directory: './'
-
-            - name: 'Run PHPUnit with Code Coverage'
-              run: ./vendor/bin/phpunit -v -c phpunit.xml.dist --coverage-clover=coverage.xml
-
-            - name: 'Download Coverage Files'
-              uses: actions/download-artifact@v2
-              with:
-                  path: reports
-
-            - name: 'Upload to Codecov'
-              uses: codecov/codecov-action@v1
-              with:
-                  files: ./coverage.xml
-                  fail_ci_if_error: true
-                  verbose: true
+  composer-validate:
+    runs-on: ubuntu-latest
+    name: "Composer Validate"
+    steps:
+      - name: 'Checkout Code'
+        uses: actions/checkout@v2
+
+      - name: 'Validate composer.json'
+        run: composer validate --no-check-all --strict --no-check-lock
+
+  composer-install:
+    needs: composer-validate
+    runs-on: ubuntu-latest
+    name: "Composer Install"
+    steps:
+      - name: 'Checkout Code'
+        uses: actions/checkout@v2
+
+      - name: 'Install Dependencies'
+        run: composer install --prefer-dist --no-progress --no-interaction
+
+  code-style:
+    needs: composer-install
+    runs-on: ubuntu-latest
+    name: "Code Style"
+    strategy:
+      fail-fast: false
+    steps:
+      - name: 'Checkout Code'
+        uses: actions/checkout@v2
+
+      - name: 'Setup PHP'
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 8.1
+          ini-values: memory_limit=-1
+          coverage: none
+          tools: composer:v2
+
+      - name: 'Install PHP dependencies with Composer'
+        run: composer install --prefer-dist --no-progress --optimize-autoloader
+        working-directory: './'
+
+      - name: 'Run CodeSniffer'
+        run: ./vendor/bin/phpcs ./ -p --encoding=utf-8 --extensions=php --ignore="vendor|Tests|src|public" --standard=./vendor/escapestudios/symfony2-coding-standard/Symfony
+
+  static-analysis:
+    needs: composer-install
+    runs-on: ubuntu-latest
+    name: "Static Analysis"
+    strategy:
+      fail-fast: false
+    steps:
+      - name: 'Checkout Code'
+        uses: actions/checkout@v2
+
+      - name: 'Setup PHP'
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 8.1
+          ini-values: memory_limit=-1
+          coverage: none
+          tools: composer:v2
+
+      - name: 'Install PHP dependencies with Composer'
+        run: composer install --prefer-dist --no-progress --optimize-autoloader
+        working-directory: './'
+
+      - name: 'Run PHPStan'
+        run: ./vendor/bin/phpstan analyse --no-progress -c phpstan.neon ./
+
+  test:
+    needs: composer-install
+    runs-on: ubuntu-latest
+    name: "Tests (PHP ${{ matrix.php-version }} / Symfony ${{ matrix.symfony-version }})"
+    strategy:
+      fail-fast: false
+      matrix:
+        php-version:
+          - '8.1'
+        symfony-version:
+          - '6.1'
+    steps:
+      - name: 'Checkout Code'
+        uses: actions/checkout@v2
+
+      - name: 'Setup PHP'
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php-version }}
+          ini-values: memory_limit=-1
+          coverage: none
+          tools: composer:v2
+        env:
+          SYMFONY_VERSION: ${{ matrix.symfony-version }}
+
+      - name: 'Install PHP dependencies with Composer'
+        run: composer install --prefer-dist --no-progress --optimize-autoloader
+        working-directory: './'
+
+      - name: 'Run PHPUnit'
+        run: ./vendor/bin/phpunit -v -c phpunit.xml.dist
+
+  code-coverage:
+    needs: test
+    runs-on: ubuntu-latest
+    name: "Code Coverage"
+    strategy:
+      fail-fast: false
+    steps:
+      - name: 'Checkout Code'
+        uses: actions/checkout@v2
+
+      - name: 'Setup PHP'
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 8.1
+          ini-values: memory_limit=-1
+          coverage: pcov
+          tools: composer:v2
+
+      - name: 'Install PHP dependencies with Composer'
+        run: composer install --prefer-dist --no-progress --optimize-autoloader
+        working-directory: './'
+
+      - name: 'Run PHPUnit with Code Coverage'
+        run: ./vendor/bin/phpunit -v -c phpunit.xml.dist --coverage-clover=coverage.xml
+
+      - name: 'Download Coverage Files'
+        uses: actions/download-artifact@v2
+        with:
+          path: reports
+
+      - name: 'Upload to Codecov'
+        uses: codecov/codecov-action@v1
+        with:
+          files: ./coverage.xml
+          fail_ci_if_error: true
+          verbose: true
diff --git a/.scrutinizer.yml b/.scrutinizer.yml
index 2d43eea..bf2471e 100644
--- a/.scrutinizer.yml
+++ b/.scrutinizer.yml
@@ -1,10 +1,10 @@
 checks:
-    php: true
+  php: true
 
 filter:
-    excluded_paths:
-        - vendor/*
-        - Tests/*
+  excluded_paths:
+    - vendor/*
+    - Tests/*
 
 before_commands:
-    - "composer install --prefer-dist"
+  - "composer install --prefer-dist"
diff --git a/.styleci.yml b/.styleci.yml
index 984d295..abb4d41 100644
--- a/.styleci.yml
+++ b/.styleci.yml
@@ -3,17 +3,17 @@ preset: symfony
 tab-width: 4
 use-tabs: false
 enabled:
-    - combine_consecutive_unsets
-    - ordered_class_elements
-    - alpha_ordered_imports
-    - declare_strict_types
-    - phpdoc_order
+  - combine_consecutive_unsets
+  - ordered_class_elements
+  - alpha_ordered_imports
+  - declare_strict_types
+  - phpdoc_order
 disabled:
-    - no_superfluous_phpdoc_tags_symfony
-    - native_function_invocation_symfony
+  - no_superfluous_phpdoc_tags_symfony
+  - native_function_invocation_symfony
 finder:
-    exclude:
-        - "Tests"
-        - "vendor"
-    name:
-        - "*.php"
+  exclude:
+    - "Tests"
+    - "vendor"
+  name:
+    - "*.php"
diff --git a/Config/ConfigParser.php b/Config/ConfigParser.php
index 579ac4a..8118e0b 100644
--- a/Config/ConfigParser.php
+++ b/Config/ConfigParser.php
@@ -12,6 +12,7 @@
 
 namespace StfalconStudio\SwaggerBundle\Config;
 
+use StfalconStudio\SwaggerBundle\Exception\UnexpectedValueException;
 use Symfony\Component\Finder\Finder;
 use Symfony\Component\Yaml\Yaml;
 
@@ -31,20 +32,24 @@ public function __construct(string $configFolder)
     }
 
     /**
-     * @return array
+     * @return mixed[]
      */
     public function parse(): array
     {
         $config = Yaml::parseFile($this->configFolder.'index.yaml');
-        $config = $this->iterate($config);
+        if (!\is_array($config)) {
+            throw new UnexpectedValueException();
+        }
 
-        return $config;
+        return $this->iterate($config);
     }
 
     /**
-     * @param array $config
+     * @param mixed[] $config
+     *
+     * @throws UnexpectedValueException
      *
-     * @return array
+     * @return mixed[]
      */
     private function iterate(array $config): array
     {
@@ -77,7 +82,9 @@ private function iterate(array $config): array
     /**
      * @param string $dirPath
      *
-     * @return array
+     * @throws UnexpectedValueException
+     *
+     * @return mixed[]
      */
     private function parseDir(string $dirPath): array
     {
@@ -92,7 +99,12 @@ private function parseDir(string $dirPath): array
         $nestedDirs = [];
         if ($finder->hasResults()) {
             foreach ($finder as $file) {
-                $nestedDirs = \array_replace_recursive($nestedDirs, Yaml::parseFile($file->getPathname()));
+                $replacements = Yaml::parseFile($file->getPathname());
+                if (!\is_array($replacements)) {
+                    throw new UnexpectedValueException();
+                }
+
+                $nestedDirs = \array_replace_recursive($nestedDirs, $replacements);
 
                 if (!\is_array($nestedDirs)) {
                     throw new \UnexpectedValueException('Expected array after parsing, NULL given');
@@ -106,10 +118,18 @@ private function parseDir(string $dirPath): array
     /**
      * @param string $filePath
      *
-     * @return array
+     * @throws UnexpectedValueException
+     *
+     * @return mixed[]
      */
     private function parseFile(string $filePath): array
     {
-        return Yaml::parseFile($filePath);
+        $result = Yaml::parseFile($filePath);
+
+        if (!\is_array($result)) {
+            throw new UnexpectedValueException();
+        }
+
+        return $result;
     }
 }
diff --git a/Exception/UnexpectedValueException.php b/Exception/UnexpectedValueException.php
new file mode 100644
index 0000000..0545877
--- /dev/null
+++ b/Exception/UnexpectedValueException.php
@@ -0,0 +1,20 @@
+<?php
+/*
+ * This file is part of the SwaggerBundle.
+ *
+ * (c) Stfalcon LLC <stfalcon.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace StfalconStudio\SwaggerBundle\Exception;
+
+/**
+ * UnexpectedValueException.
+ */
+class UnexpectedValueException extends \UnexpectedValueException
+{
+}
diff --git a/Resources/config/services.yaml b/Resources/config/services.yaml
index 7f065d5..1aeea2d 100644
--- a/Resources/config/services.yaml
+++ b/Resources/config/services.yaml
@@ -1,11 +1,11 @@
 services:
-    _defaults:
-        autowire: true
-        autoconfigure: true
-        public: false
-        bind:
-            $configFolder: "%swagger.config_folder%"
-            $docsFolder: "%kernel.project_dir%/public/api/"
+  _defaults:
+    autowire: true
+    autoconfigure: true
+    public: false
+    bind:
+      $configFolder: "%swagger.config_folder%"
+      $docsFolder: "%kernel.project_dir%/public/api/"
 
-    StfalconStudio\SwaggerBundle\:
-        resource: '../../{Command,Config,Generator}'
+  StfalconStudio\SwaggerBundle\:
+    resource: '../../{Command,Config,Generator}'
diff --git a/Tests/Exception/UnexpectedValueExceptionTest.php b/Tests/Exception/UnexpectedValueExceptionTest.php
new file mode 100644
index 0000000..e549742
--- /dev/null
+++ b/Tests/Exception/UnexpectedValueExceptionTest.php
@@ -0,0 +1,29 @@
+<?php
+/*
+ * This file is part of the SwaggerBundle.
+ *
+ * (c) Stfalcon LLC <stfalcon.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace StfalconStudio\SwaggerBundle\Tests\DependencyInjection\Exception;
+
+use PHPUnit\Framework\TestCase;
+use StfalconStudio\SwaggerBundle\Exception\UnexpectedValueException;
+
+/**
+ * UnexpectedValueExceptionTest.
+ */
+final class UnexpectedValueExceptionTest extends TestCase
+{
+    public function testConstructor(): void
+    {
+        $exception = new UnexpectedValueException();
+
+        self::assertInstanceOf(\UnexpectedValueException::class, $exception);
+    }
+}
diff --git a/composer.json b/composer.json
index 0336eae..422ac5e 100644
--- a/composer.json
+++ b/composer.json
@@ -9,30 +9,30 @@
         "issues": "https://github.com/stfalcon-studio/swagger-bundle/issues"
     },
     "require": {
-        "php": ">=7.4",
+        "php": ">=8.1",
         "ext-ctype": "*",
         "ext-iconv": "*",
-        "symfony/console": "^5.4 || ^6.0",
-        "symfony/flex": "^1.17",
-        "symfony/framework-bundle": "^5.4 || ^6.0",
-        "symfony/twig-bundle": "^5.4 || ^6.0",
-        "symfony/yaml": "^5.4 || ^6.0",
-        "symfony/asset": "^5.4 || ^6.0",
-        "symfony/finder": "^5.4 || ^6.0",
-        "symfony/polyfill-ctype": "^1.13",
-        "twig/twig": "^3.3"
+        "symfony/console": "^6.1",
+        "symfony/flex": "^v2.2",
+        "symfony/framework-bundle": "^6.1",
+        "symfony/twig-bundle": "^6.1",
+        "symfony/yaml": "^6.1",
+        "symfony/asset": "^6.1",
+        "symfony/finder": "^6.1",
+        "symfony/polyfill-ctype": "^1.26",
+        "twig/twig": "^3.4"
     },
     "require-dev": {
         "escapestudios/symfony2-coding-standard": "^3.12",
-        "phpstan/phpstan": "^1.2",
-        "phpstan/phpstan-doctrine": "^1.0",
-        "phpstan/phpstan-phpunit": "^1.0",
-        "phpstan/phpstan-symfony": "^1.0",
+        "phpstan/phpstan": "^1.7.10",
+        "phpstan/phpstan-doctrine": "^1.3",
+        "phpstan/phpstan-phpunit": "^1.1",
+        "phpstan/phpstan-symfony": "^1.2",
         "thecodingmachine/phpstan-strict-rules": "^1.0",
         "phpunit/phpunit": "^9.5",
-        "symfony/dotenv": "^5.4 || ^6.0",
-        "symfony/filesystem": "^5.4 || ^6.0",
-        "symfony/phpunit-bridge": "^5.4 || ^6.0"
+        "symfony/dotenv": "^6.1",
+        "symfony/filesystem": "^6.1",
+        "symfony/phpunit-bridge": "^6.1"
     },
     "autoload": {
         "psr-4": {