diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
index 980635cd9..a65465199 100644
--- a/phpstan-baseline.neon
+++ b/phpstan-baseline.neon
@@ -10,11 +10,6 @@ parameters:
 			count: 2
 			path: src/Render/Html/HtmlOpenApiRenderer.php
 
-		-
-			message: "#^Class Twig_Environment not found\\.$#"
-			count: 1
-			path: src/Render/Html/HtmlOpenApiRenderer.php
-
 		-
 			message: "#^Parameter \\$twig of method Nelmio\\\\ApiDocBundle\\\\Render\\\\Html\\\\HtmlOpenApiRenderer\\:\\:__construct\\(\\) has invalid type Twig_Environment\\.$#"
 			count: 1
diff --git a/src/ApiDocGenerator.php b/src/ApiDocGenerator.php
index e22c36106..4ed99a4d4 100644
--- a/src/ApiDocGenerator.php
+++ b/src/ApiDocGenerator.php
@@ -30,14 +30,6 @@ final class ApiDocGenerator
     /** @var OpenApi */
     private $openApi;
 
-    /** @var iterable|DescriberInterface[] */
-    private $describers;
-
-    /** @var iterable|ModelDescriberInterface[] */
-    private $modelDescribers;
-
-    private ?CacheItemPoolInterface $cacheItemPool;
-
     private string $cacheItemId;
 
     /** @var string[] */
@@ -53,14 +45,16 @@ final class ApiDocGenerator
     private Generator $generator;
 
     /**
-     * @param DescriberInterface[]|iterable      $describers
-     * @param ModelDescriberInterface[]|iterable $modelDescribers
+     * @param iterable<DescriberInterface>      $describers
+     * @param iterable<ModelDescriberInterface> $modelDescribers
      */
-    public function __construct($describers, $modelDescribers, ?CacheItemPoolInterface $cacheItemPool = null, ?string $cacheItemId = null, ?Generator $generator = null)
-    {
-        $this->describers = $describers;
-        $this->modelDescribers = $modelDescribers;
-        $this->cacheItemPool = $cacheItemPool;
+    public function __construct(
+        private iterable $describers,
+        private iterable $modelDescribers,
+        private ?CacheItemPoolInterface $cacheItemPool = null,
+        ?string $cacheItemId = null,
+        ?Generator $generator = null,
+    ) {
         $this->cacheItemId = $cacheItemId ?? 'openapi_doc';
         $this->generator = $generator ?? new Generator($this->logger);
     }
diff --git a/src/Attribute/Model.php b/src/Attribute/Model.php
index 677797e8f..09b85ad6c 100644
--- a/src/Attribute/Model.php
+++ b/src/Attribute/Model.php
@@ -30,23 +30,6 @@ final class Model extends Attachable
         Parameter::class,
     ];
 
-    public string $type;
-
-    /**
-     * @var string[]|null
-     */
-    public ?array $groups;
-
-    /**
-     * @var mixed[]
-     */
-    public array $options;
-
-    /**
-     * @var array<string, mixed>
-     */
-    public array $serializationContext;
-
     /**
      * @param mixed[]              $properties
      * @param string[]             $groups
@@ -55,10 +38,10 @@ final class Model extends Attachable
      */
     public function __construct(
         array $properties = [],
-        string $type = Generator::UNDEFINED,
-        ?array $groups = null,
-        array $options = [],
-        array $serializationContext = [],
+        public string $type = Generator::UNDEFINED,
+        public ?array $groups = null,
+        public array $options = [],
+        public array $serializationContext = [],
     ) {
         parent::__construct($properties + [
             'type' => $type,
diff --git a/src/Attribute/Security.php b/src/Attribute/Security.php
index fe3c92d19..55b4b7903 100644
--- a/src/Attribute/Security.php
+++ b/src/Attribute/Security.php
@@ -23,21 +23,14 @@ class Security extends AbstractAnnotation
 
     public static $_required = ['name'];
 
-    public ?string $name;
-
-    /**
-     * @var string[]
-     */
-    public array $scopes = [];
-
     /**
      * @param array<string, mixed> $properties
      * @param string[]             $scopes
      */
     public function __construct(
         array $properties = [],
-        ?string $name = null,
-        array $scopes = [],
+        public ?string $name = null,
+        public array $scopes = [],
     ) {
         parent::__construct($properties + [
             'name' => $name,
diff --git a/src/Command/DumpCommand.php b/src/Command/DumpCommand.php
index 332cc01d0..c2a8a41dc 100644
--- a/src/Command/DumpCommand.php
+++ b/src/Command/DumpCommand.php
@@ -20,21 +20,18 @@
 
 final class DumpCommand extends Command
 {
-    private RenderOpenApi $renderOpenApi;
-
     /**
      * @var mixed[]
      */
-    private $defaultHtmlConfig = [
+    private array $defaultHtmlConfig = [
         'assets_mode' => AssetsMode::CDN,
         'swagger_ui_config' => [],
         'redocly_config' => [],
     ];
 
-    public function __construct(RenderOpenApi $renderOpenApi)
-    {
-        $this->renderOpenApi = $renderOpenApi;
-
+    public function __construct(
+        private RenderOpenApi $renderOpenApi,
+    ) {
         parent::__construct();
     }
 
diff --git a/src/Controller/DocumentationController.php b/src/Controller/DocumentationController.php
index cc3ab34e2..d5a66e6db 100644
--- a/src/Controller/DocumentationController.php
+++ b/src/Controller/DocumentationController.php
@@ -19,11 +19,9 @@
 
 final class DocumentationController
 {
-    private RenderOpenApi $renderOpenApi;
-
-    public function __construct(RenderOpenApi $renderOpenApi)
-    {
-        $this->renderOpenApi = $renderOpenApi;
+    public function __construct(
+        private RenderOpenApi $renderOpenApi,
+    ) {
     }
 
     public function __invoke(Request $request, string $area = 'default'): JsonResponse
diff --git a/src/Controller/SwaggerUiController.php b/src/Controller/SwaggerUiController.php
index d79d34f74..7344b73f1 100644
--- a/src/Controller/SwaggerUiController.php
+++ b/src/Controller/SwaggerUiController.php
@@ -19,14 +19,10 @@
 
 final class SwaggerUiController
 {
-    private RenderOpenApi $renderOpenApi;
-
-    private string $uiRenderer;
-
-    public function __construct(RenderOpenApi $renderOpenApi, string $uiRenderer)
-    {
-        $this->renderOpenApi = $renderOpenApi;
-        $this->uiRenderer = $uiRenderer;
+    public function __construct(
+        private RenderOpenApi $renderOpenApi,
+        private string $uiRenderer,
+    ) {
     }
 
     public function __invoke(Request $request, string $area = 'default'): Response
diff --git a/src/Controller/YamlDocumentationController.php b/src/Controller/YamlDocumentationController.php
index 0cd65f8d4..fb69125b9 100644
--- a/src/Controller/YamlDocumentationController.php
+++ b/src/Controller/YamlDocumentationController.php
@@ -18,11 +18,9 @@
 
 final class YamlDocumentationController
 {
-    private RenderOpenApi $renderOpenApi;
-
-    public function __construct(RenderOpenApi $renderOpenApi)
-    {
-        $this->renderOpenApi = $renderOpenApi;
+    public function __construct(
+        private RenderOpenApi $renderOpenApi,
+    ) {
     }
 
     public function __invoke(Request $request, string $area = 'default'): Response
diff --git a/src/Describer/ExternalDocDescriber.php b/src/Describer/ExternalDocDescriber.php
index 1a17093f1..49672c994 100644
--- a/src/Describer/ExternalDocDescriber.php
+++ b/src/Describer/ExternalDocDescriber.php
@@ -16,20 +16,13 @@
 
 class ExternalDocDescriber implements DescriberInterface
 {
-    /**
-     * @var array<string, mixed>|callable
-     */
-    private $externalDoc;
-
-    private bool $overwrite;
-
     /**
      * @param array<string, mixed>|callable $externalDoc
      */
-    public function __construct($externalDoc, bool $overwrite = false)
-    {
-        $this->externalDoc = $externalDoc;
-        $this->overwrite = $overwrite;
+    public function __construct(
+        private $externalDoc,
+        private bool $overwrite = false,
+    ) {
     }
 
     public function describe(OA\OpenApi $api): void
diff --git a/src/Describer/OpenApiPhpDescriber.php b/src/Describer/OpenApiPhpDescriber.php
index 67ca6c5cd..68380fcb7 100644
--- a/src/Describer/OpenApiPhpDescriber.php
+++ b/src/Describer/OpenApiPhpDescriber.php
@@ -30,15 +30,11 @@ final class OpenApiPhpDescriber
 {
     use SetsContextTrait;
 
-    private RouteCollection $routeCollection;
-    private ControllerReflector $controllerReflector;
-    private LoggerInterface $logger;
-
-    public function __construct(RouteCollection $routeCollection, ControllerReflector $controllerReflector, LoggerInterface $logger)
-    {
-        $this->routeCollection = $routeCollection;
-        $this->controllerReflector = $controllerReflector;
-        $this->logger = $logger;
+    public function __construct(
+        private RouteCollection $routeCollection,
+        private ControllerReflector $controllerReflector,
+        private LoggerInterface $logger,
+    ) {
     }
 
     public function describe(OA\OpenApi $api): void
diff --git a/src/Describer/RouteDescriber.php b/src/Describer/RouteDescriber.php
index 41022e4e2..c8a2532af 100644
--- a/src/Describer/RouteDescriber.php
+++ b/src/Describer/RouteDescriber.php
@@ -20,23 +20,14 @@ final class RouteDescriber implements DescriberInterface, ModelRegistryAwareInte
 {
     use ModelRegistryAwareTrait;
 
-    private RouteCollection $routeCollection;
-
-    private ControllerReflector $controllerReflector;
-
-    /**
-     * @var iterable<RouteDescriberInterface>
-     */
-    private iterable $routeDescribers;
-
     /**
-     * @param RouteDescriberInterface[]|iterable $routeDescribers
+     * @param iterable<RouteDescriberInterface> $routeDescribers
      */
-    public function __construct(RouteCollection $routeCollection, ControllerReflector $controllerReflector, $routeDescribers)
-    {
-        $this->routeCollection = $routeCollection;
-        $this->controllerReflector = $controllerReflector;
-        $this->routeDescribers = $routeDescribers;
+    public function __construct(
+        private RouteCollection $routeCollection,
+        private ControllerReflector $controllerReflector,
+        private iterable $routeDescribers,
+    ) {
     }
 
     public function describe(OA\OpenApi $api): void
diff --git a/src/Model/Model.php b/src/Model/Model.php
index 304bdf672..8f09ba747 100644
--- a/src/Model/Model.php
+++ b/src/Model/Model.php
@@ -15,28 +15,17 @@
 
 final class Model
 {
-    private Type $type;
-
-    /**
-     * @var mixed[]
-     */
-    private array $options;
-
-    /**
-     * @var mixed[]
-     */
-    private array $serializationContext;
-
     /**
      * @param string[]|null $groups
      * @param mixed[]       $options
      * @param mixed[]       $serializationContext
      */
-    public function __construct(Type $type, ?array $groups = null, array $options = [], array $serializationContext = [])
+    public function __construct(
+        private Type $type,
+        ?array $groups = null,
+        private array $options = [],
+        private array $serializationContext = [])
     {
-        $this->type = $type;
-        $this->options = $options;
-        $this->serializationContext = $serializationContext;
         if (null !== $groups) {
             $this->serializationContext['groups'] = $groups;
         }
diff --git a/src/Model/ModelRegistry.php b/src/Model/ModelRegistry.php
index 00efab40a..4b4d86d2c 100644
--- a/src/Model/ModelRegistry.php
+++ b/src/Model/ModelRegistry.php
@@ -49,22 +49,16 @@ final class ModelRegistry
     private array $names = [];
 
     /**
-     * @var iterable<ModelDescriberInterface>
-     */
-    private iterable $modelDescribers;
-
-    private OA\OpenApi $api;
-
-    /**
-     * @param ModelDescriberInterface[]|iterable $modelDescribers
-     * @param array<string, mixed>               $alternativeNames
+     * @param iterable<ModelDescriberInterface> $modelDescribers
+     * @param array<string, mixed>              $alternativeNames
      *
      * @internal
      */
-    public function __construct($modelDescribers, OA\OpenApi $api, array $alternativeNames = [])
+    public function __construct(
+        private iterable $modelDescribers,
+        private OA\OpenApi $api,
+        array $alternativeNames = [])
     {
-        $this->modelDescribers = $modelDescribers;
-        $this->api = $api;
         $this->logger = new NullLogger();
         foreach (array_reverse($alternativeNames) as $alternativeName => $criteria) {
             $this->alternativeNames[] = $model = new Model(
diff --git a/src/ModelDescriber/Annotations/SymfonyConstraintAnnotationReader.php b/src/ModelDescriber/Annotations/SymfonyConstraintAnnotationReader.php
index 8696a63a4..a6d79a5c6 100644
--- a/src/ModelDescriber/Annotations/SymfonyConstraintAnnotationReader.php
+++ b/src/ModelDescriber/Annotations/SymfonyConstraintAnnotationReader.php
@@ -26,16 +26,11 @@ class SymfonyConstraintAnnotationReader
 {
     use SetsContextTrait;
 
-    /**
-     * @var OA\Schema
-     */
-    private $schema;
+    private OA\Schema $schema;
 
-    private bool $useValidationGroups;
-
-    public function __construct(bool $useValidationGroups = false)
-    {
-        $this->useValidationGroups = $useValidationGroups;
+    public function __construct(
+        private bool $useValidationGroups = false,
+    ) {
     }
 
     /**
@@ -68,11 +63,6 @@ private function processPropertyAttributes($reflection, OA\Property $property, a
                     return;
                 }
 
-                // The field is required
-                if (null === $this->schema) {
-                    return;
-                }
-
                 $propertyName = Util::getSchemaPropertyName($this->schema, $property);
                 if (null === $propertyName) {
                     return;
diff --git a/src/ModelDescriber/BazingaHateoasModelDescriber.php b/src/ModelDescriber/BazingaHateoasModelDescriber.php
index 117fe719d..1066c322a 100644
--- a/src/ModelDescriber/BazingaHateoasModelDescriber.php
+++ b/src/ModelDescriber/BazingaHateoasModelDescriber.php
@@ -26,13 +26,10 @@ class BazingaHateoasModelDescriber implements ModelDescriberInterface, ModelRegi
 {
     use ModelRegistryAwareTrait;
 
-    private MetadataFactoryInterface $factory;
-    private JMSModelDescriber $JMSModelDescriber;
-
-    public function __construct(MetadataFactoryInterface $factory, JMSModelDescriber $JMSModelDescriber)
-    {
-        $this->factory = $factory;
-        $this->JMSModelDescriber = $JMSModelDescriber;
+    public function __construct(
+        private MetadataFactoryInterface $factory,
+        private JMSModelDescriber $JMSModelDescriber,
+    ) {
     }
 
     public function setModelRegistry(ModelRegistry $modelRegistry): void
diff --git a/src/ModelDescriber/FormModelDescriber.php b/src/ModelDescriber/FormModelDescriber.php
index cf89bc9e1..e20a271e9 100644
--- a/src/ModelDescriber/FormModelDescriber.php
+++ b/src/ModelDescriber/FormModelDescriber.php
@@ -37,28 +37,15 @@ final class FormModelDescriber implements ModelDescriberInterface, ModelRegistry
     use ModelRegistryAwareTrait;
     use SetsContextTrait;
 
-    private FormFactoryInterface $formFactory;
-
-    /**
-     * @var string[]
-     */
-    private array $mediaTypes;
-    private bool $useValidationGroups;
-    private bool $isFormCsrfExtensionEnabled;
-
     /**
      * @param string[] $mediaTypes
      */
     public function __construct(
-        FormFactoryInterface $formFactory,
-        array $mediaTypes,
-        bool $useValidationGroups,
-        bool $isFormCsrfExtensionEnabled,
+        private FormFactoryInterface $formFactory,
+        private array $mediaTypes,
+        private bool $useValidationGroups,
+        private bool $isFormCsrfExtensionEnabled,
     ) {
-        $this->formFactory = $formFactory;
-        $this->mediaTypes = $mediaTypes;
-        $this->useValidationGroups = $useValidationGroups;
-        $this->isFormCsrfExtensionEnabled = $isFormCsrfExtensionEnabled;
     }
 
     public function describe(Model $model, OA\Schema $schema): void
diff --git a/src/ModelDescriber/JMSModelDescriber.php b/src/ModelDescriber/JMSModelDescriber.php
index 81d376a60..633dac767 100644
--- a/src/ModelDescriber/JMSModelDescriber.php
+++ b/src/ModelDescriber/JMSModelDescriber.php
@@ -35,12 +35,6 @@ class JMSModelDescriber implements ModelDescriberInterface, ModelRegistryAwareIn
     use ApplyOpenApiDiscriminatorTrait;
     use ModelRegistryAwareTrait;
 
-    private MetadataFactoryInterface $factory;
-
-    private ?SerializationContextFactoryInterface $contextFactory;
-
-    private ?PropertyNamingStrategyInterface $namingStrategy;
-
     /**
      * @var array<string, Context>
      */
@@ -51,33 +45,21 @@ class JMSModelDescriber implements ModelDescriberInterface, ModelRegistryAwareIn
      */
     private array $metadataStacks = [];
 
-    /**
-     * @var string[]
-     */
-    private array $mediaTypes;
-
     /**
      * @var array<string, bool|null>
      */
     private array $propertyTypeUseGroupsCache = [];
 
-    private bool $useValidationGroups;
-
     /**
      * @param string[] $mediaTypes
      */
     public function __construct(
-        MetadataFactoryInterface $factory,
-        array $mediaTypes,
-        ?PropertyNamingStrategyInterface $namingStrategy = null,
-        bool $useValidationGroups = false,
-        ?SerializationContextFactoryInterface $contextFactory = null,
+        private MetadataFactoryInterface $factory,
+        private array $mediaTypes,
+        private ?PropertyNamingStrategyInterface $namingStrategy = null,
+        private bool $useValidationGroups = false,
+        private ?SerializationContextFactoryInterface $contextFactory = null,
     ) {
-        $this->factory = $factory;
-        $this->namingStrategy = $namingStrategy;
-        $this->mediaTypes = $mediaTypes;
-        $this->useValidationGroups = $useValidationGroups;
-        $this->contextFactory = $contextFactory;
     }
 
     public function describe(Model $model, OA\Schema $schema): void
diff --git a/src/ModelDescriber/ObjectModelDescriber.php b/src/ModelDescriber/ObjectModelDescriber.php
index 7e32dd8fb..d8be6cfbd 100644
--- a/src/ModelDescriber/ObjectModelDescriber.php
+++ b/src/ModelDescriber/ObjectModelDescriber.php
@@ -30,33 +30,18 @@ class ObjectModelDescriber implements ModelDescriberInterface, ModelRegistryAwar
     use ApplyOpenApiDiscriminatorTrait;
     use ModelRegistryAwareTrait;
 
-    private PropertyInfoExtractorInterface $propertyInfo;
-    private ?ClassMetadataFactoryInterface $classMetadataFactory;
-    private PropertyDescriberInterface $propertyDescriber;
-    /** @var string[] */
-    private array $mediaTypes;
-    /** @var (NameConverterInterface&AdvancedNameConverterInterface)|null */
-    private ?NameConverterInterface $nameConverter;
-    private bool $useValidationGroups;
-
     /**
      * @param (NameConverterInterface&AdvancedNameConverterInterface)|null $nameConverter
      * @param string[]                                                     $mediaTypes
      */
     public function __construct(
-        PropertyInfoExtractorInterface $propertyInfo,
-        PropertyDescriberInterface $propertyDescribers,
-        array $mediaTypes,
-        ?NameConverterInterface $nameConverter = null,
-        bool $useValidationGroups = false,
-        ?ClassMetadataFactoryInterface $classMetadataFactory = null,
+        private PropertyInfoExtractorInterface $propertyInfo,
+        private PropertyDescriberInterface $propertyDescriber,
+        private array $mediaTypes,
+        private ?NameConverterInterface $nameConverter = null,
+        private bool $useValidationGroups = false,
+        private ?ClassMetadataFactoryInterface $classMetadataFactory = null,
     ) {
-        $this->propertyInfo = $propertyInfo;
-        $this->propertyDescriber = $propertyDescribers;
-        $this->mediaTypes = $mediaTypes;
-        $this->nameConverter = $nameConverter;
-        $this->useValidationGroups = $useValidationGroups;
-        $this->classMetadataFactory = $classMetadataFactory;
     }
 
     public function describe(Model $model, OA\Schema $schema): void
diff --git a/src/OpenApiPhp/ModelRegister.php b/src/OpenApiPhp/ModelRegister.php
index fb2776d01..96a186475 100644
--- a/src/OpenApiPhp/ModelRegister.php
+++ b/src/OpenApiPhp/ModelRegister.php
@@ -26,18 +26,13 @@
  */
 final class ModelRegister
 {
-    private ModelRegistry $modelRegistry;
-
-    /** @var string[] */
-    private array $mediaTypes;
-
     /**
      * @param string[] $mediaTypes
      */
-    public function __construct(ModelRegistry $modelRegistry, array $mediaTypes)
-    {
-        $this->modelRegistry = $modelRegistry;
-        $this->mediaTypes = $mediaTypes;
+    public function __construct(
+        private ModelRegistry $modelRegistry,
+        private array $mediaTypes,
+    ) {
     }
 
     /**
diff --git a/src/PropertyDescriber/PropertyDescriber.php b/src/PropertyDescriber/PropertyDescriber.php
index 03793ae1b..15a1953f7 100644
--- a/src/PropertyDescriber/PropertyDescriber.php
+++ b/src/PropertyDescriber/PropertyDescriber.php
@@ -25,16 +25,12 @@ final class PropertyDescriber implements PropertyDescriberInterface, ModelRegist
     /** @var array<string, PropertyDescriberInterface[]> Recursion helper */
     private array $called = [];
 
-    /** @var iterable<PropertyDescriberInterface> */
-    private iterable $propertyDescribers;
-
     /**
      * @param iterable<PropertyDescriberInterface> $propertyDescribers
      */
     public function __construct(
-        iterable $propertyDescribers,
+        private iterable $propertyDescribers,
     ) {
-        $this->propertyDescribers = $propertyDescribers;
     }
 
     /**
diff --git a/src/Render/Html/GetNelmioAsset.php b/src/Render/Html/GetNelmioAsset.php
index 821ba04a5..0438e389d 100644
--- a/src/Render/Html/GetNelmioAsset.php
+++ b/src/Render/Html/GetNelmioAsset.php
@@ -20,13 +20,12 @@
  */
 class GetNelmioAsset extends AbstractExtension
 {
-    private AssetExtension $assetExtension;
     private string $resourcesDir;
     private string $cdnUrl;
 
-    public function __construct(AssetExtension $assetExtension)
+    public function __construct(
+        private AssetExtension $assetExtension)
     {
-        $this->assetExtension = $assetExtension;
         $this->cdnUrl = 'https://cdn.jsdelivr.net/gh/nelmio/NelmioApiDocBundle/public';
         $this->resourcesDir = __DIR__.'/../../../public';
     }
diff --git a/src/Render/Html/HtmlOpenApiRenderer.php b/src/Render/Html/HtmlOpenApiRenderer.php
index bb6a3f42a..4199d4ae0 100644
--- a/src/Render/Html/HtmlOpenApiRenderer.php
+++ b/src/Render/Html/HtmlOpenApiRenderer.php
@@ -21,22 +21,13 @@
  */
 class HtmlOpenApiRenderer implements OpenApiRenderer
 {
-    /** @var Environment|\Twig_Environment */
-    private $twig;
-    /** @var array<string, mixed> */
-    private array $htmlConfig;
-
     /**
-     * @param Environment|\Twig_Environment $twig
-     * @param array<string, mixed>          $htmlConfig
+     * @param array<string, mixed> $htmlConfig
      */
-    public function __construct($twig, array $htmlConfig)
-    {
-        if (!$twig instanceof \Twig_Environment && !$twig instanceof Environment) {
-            throw new \InvalidArgumentException(\sprintf('Providing an instance of "%s" as twig is not supported.', $twig::class));
-        }
-        $this->twig = $twig;
-        $this->htmlConfig = $htmlConfig;
+    public function __construct(
+        private Environment|\Twig_Environment $twig,
+        private array $htmlConfig,
+    ) {
     }
 
     public function getFormat(): string
diff --git a/src/Render/RenderOpenApi.php b/src/Render/RenderOpenApi.php
index 6a32a1309..ff7ffc8a9 100644
--- a/src/Render/RenderOpenApi.php
+++ b/src/Render/RenderOpenApi.php
@@ -25,14 +25,13 @@ class RenderOpenApi
     public const JSON = 'json';
     public const YAML = 'yaml';
 
-    private ContainerInterface $generatorLocator;
-
     /** @var array<string, OpenApiRenderer|null> */
     private array $openApiRenderers = [];
 
-    public function __construct(ContainerInterface $generatorLocator, ?OpenApiRenderer ...$openApiRenderers)
-    {
-        $this->generatorLocator = $generatorLocator;
+    public function __construct(
+        private ContainerInterface $generatorLocator,
+        ?OpenApiRenderer ...$openApiRenderers,
+    ) {
         foreach ($openApiRenderers as $openApiRenderer) {
             if (null === $openApiRenderer) {
                 continue;
diff --git a/src/RouteDescriber/FosRestDescriber.php b/src/RouteDescriber/FosRestDescriber.php
index b8ccb244a..c88e7ee87 100644
--- a/src/RouteDescriber/FosRestDescriber.php
+++ b/src/RouteDescriber/FosRestDescriber.php
@@ -27,15 +27,12 @@ final class FosRestDescriber implements RouteDescriberInterface
 {
     use RouteDescriberTrait;
 
-    /** @var string[] */
-    private array $mediaTypes;
-
     /**
      * @param string[] $mediaTypes
      */
-    public function __construct(array $mediaTypes)
+    public function __construct(
+        private array $mediaTypes)
     {
-        $this->mediaTypes = $mediaTypes;
     }
 
     public function describe(OA\OpenApi $api, Route $route, \ReflectionMethod $reflectionMethod): void
diff --git a/src/Routing/FilteredRouteCollectionBuilder.php b/src/Routing/FilteredRouteCollectionBuilder.php
index 88bf0eff4..51c028f13 100644
--- a/src/Routing/FilteredRouteCollectionBuilder.php
+++ b/src/Routing/FilteredRouteCollectionBuilder.php
@@ -20,10 +20,6 @@
 
 final class FilteredRouteCollectionBuilder
 {
-    private ControllerReflector $controllerReflector;
-
-    private string $area;
-
     /**
      * @var array<string, mixed>
      */
@@ -33,8 +29,8 @@ final class FilteredRouteCollectionBuilder
      * @param array<mixed> $options
      */
     public function __construct(
-        ControllerReflector $controllerReflector,
-        string $area,
+        private ControllerReflector $controllerReflector,
+        private string $area,
         array $options = [],
     ) {
         $resolver = new OptionsResolver();
@@ -53,8 +49,6 @@ public function __construct(
             ->setAllowedTypes('disable_default_routes', 'boolean')
         ;
 
-        $this->controllerReflector = $controllerReflector;
-        $this->area = $area;
         $this->options = $resolver->resolve($options);
     }
 
diff --git a/src/Util/ControllerReflector.php b/src/Util/ControllerReflector.php
index 43ad14458..e83fd6271 100644
--- a/src/Util/ControllerReflector.php
+++ b/src/Util/ControllerReflector.php
@@ -18,15 +18,14 @@
  */
 class ControllerReflector
 {
-    private ContainerInterface $container;
     /**
      * @var array<string, array{string, string}|null>
      */
     private array $controllers = [];
 
-    public function __construct(ContainerInterface $container)
-    {
-        $this->container = $container;
+    public function __construct(
+        private ContainerInterface $container,
+    ) {
     }
 
     /**
diff --git a/tests/Functional/ModelDescriber/NameConverter.php b/tests/Functional/ModelDescriber/NameConverter.php
index cb42c59f3..a8dd73a2b 100644
--- a/tests/Functional/ModelDescriber/NameConverter.php
+++ b/tests/Functional/ModelDescriber/NameConverter.php
@@ -18,11 +18,9 @@
 
 class NameConverter implements AdvancedNameConverterInterface
 {
-    private MetadataAwareNameConverter $inner;
-
-    public function __construct(MetadataAwareNameConverter $inner)
-    {
-        $this->inner = $inner;
+    public function __construct(
+        private MetadataAwareNameConverter $inner,
+    ) {
     }
 
     /**
diff --git a/tests/Functional/NelmioKernel.php b/tests/Functional/NelmioKernel.php
index 7adf3895f..296fbe0da 100644
--- a/tests/Functional/NelmioKernel.php
+++ b/tests/Functional/NelmioKernel.php
@@ -25,31 +25,16 @@ final class NelmioKernel extends Kernel
     use MicroKernelTrait;
 
     /**
-     * @var Bundle[]
+     * @param Bundle[]      $extraBundles
+     * @param callable|null $routeConfiguration
+     * @param string[]      $extraConfigs
      */
-    private array $extraBundles;
-
-    /**
-     * @var callable|null
-     */
-    private $routeConfiguration;
-
-    /**
-     * @var string[]
-     */
-    private array $extraConfigs;
-
-    /**
-     * @param Bundle[] $extraBundles
-     * @param string[] $extraConfigs
-     */
-    public function __construct(array $extraBundles, ?callable $routeConfiguration, array $extraConfigs)
-    {
+    public function __construct(
+        private array $extraBundles,
+        private $routeConfiguration,
+        private array $extraConfigs,
+    ) {
         parent::__construct('test', true);
-
-        $this->extraBundles = $extraBundles;
-        $this->routeConfiguration = $routeConfiguration;
-        $this->extraConfigs = $extraConfigs;
     }
 
     public function registerBundles(): iterable
diff --git a/tests/Functional/TestKernel.php b/tests/Functional/TestKernel.php
index cd9201f2d..25d318162 100644
--- a/tests/Functional/TestKernel.php
+++ b/tests/Functional/TestKernel.php
@@ -45,13 +45,10 @@ class TestKernel extends Kernel
     public const USE_VALIDATION_GROUPS = 8;
     public const USE_FORM_CSRF = 16;
 
-    private int $flag;
-
-    public function __construct(int $flag = 0)
-    {
+    public function __construct(
+        private int $flag = 0,
+    ) {
         parent::__construct('test'.$flag, true);
-
-        $this->flag = $flag;
     }
 
     public function registerBundles(): iterable