diff --git a/src/ApiDocGenerator.php b/src/ApiDocGenerator.php
index 61d805cf3..ee100affc 100644
--- a/src/ApiDocGenerator.php
+++ b/src/ApiDocGenerator.php
@@ -37,11 +37,9 @@ final class ApiDocGenerator
     /** @var iterable|ModelDescriberInterface[] */
     private $modelDescribers;
 
-    /** @var CacheItemPoolInterface|null */
-    private $cacheItemPool;
+    private ?CacheItemPoolInterface $cacheItemPool;
 
-    /** @var string */
-    private $cacheItemId;
+    private string $cacheItemId;
 
     /** @var string[] */
     private $alternativeNames = [];
@@ -53,8 +51,7 @@ final class ApiDocGenerator
      */
     private $openApiVersion;
 
-    /** @var Generator */
-    private $generator;
+    private Generator $generator;
 
     /**
      * @param DescriberInterface[]|iterable      $describers
diff --git a/src/ModelDescriber/Annotations/SymfonyConstraintAnnotationReader.php b/src/ModelDescriber/Annotations/SymfonyConstraintAnnotationReader.php
index 49a923cc3..39db78e5e 100644
--- a/src/ModelDescriber/Annotations/SymfonyConstraintAnnotationReader.php
+++ b/src/ModelDescriber/Annotations/SymfonyConstraintAnnotationReader.php
@@ -27,20 +27,14 @@ class SymfonyConstraintAnnotationReader
 {
     use SetsContextTrait;
 
-    /**
-     * @var Reader|null
-     */
-    private $annotationsReader;
+    private ?Reader $annotationsReader;
 
     /**
      * @var OA\Schema
      */
     private $schema;
 
-    /**
-     * @var bool
-     */
-    private $useValidationGroups;
+    private bool $useValidationGroups;
 
     public function __construct(?Reader $annotationsReader, bool $useValidationGroups = false)
     {
diff --git a/src/ModelDescriber/ObjectModelDescriber.php b/src/ModelDescriber/ObjectModelDescriber.php
index eac0370eb..f119bdef0 100644
--- a/src/ModelDescriber/ObjectModelDescriber.php
+++ b/src/ModelDescriber/ObjectModelDescriber.php
@@ -31,20 +31,16 @@ class ObjectModelDescriber implements ModelDescriberInterface, ModelRegistryAwar
     use ModelRegistryAwareTrait;
     use ApplyOpenApiDiscriminatorTrait;
 
-    /** @var PropertyInfoExtractorInterface */
-    private $propertyInfo;
-    /** @var ClassMetadataFactoryInterface|null */
-    private $classMetadataFactory;
-    /** @var Reader|null */
-    private $doctrineReader;
+    private PropertyInfoExtractorInterface $propertyInfo;
+    private ?ClassMetadataFactoryInterface $classMetadataFactory;
+    private ?Reader $doctrineReader;
     /** @var PropertyDescriberInterface|PropertyDescriberInterface[] */
     private $propertyDescriber;
     /** @var string[] */
-    private $mediaTypes;
+    private array $mediaTypes;
     /** @var (NameConverterInterface&AdvancedNameConverterInterface)|null */
-    private $nameConverter;
-    /** @var bool */
-    private $useValidationGroups;
+    private ?NameConverterInterface $nameConverter;
+    private bool $useValidationGroups;
 
     /**
      * @param PropertyDescriberInterface|PropertyDescriberInterface[]      $propertyDescribers
diff --git a/tests/Functional/Entity/VirtualProperty80.php b/tests/Functional/Entity/VirtualProperty80.php
index 7616a1a08..fe54a6920 100644
--- a/tests/Functional/Entity/VirtualProperty80.php
+++ b/tests/Functional/Entity/VirtualProperty80.php
@@ -35,10 +35,7 @@ class VirtualProperty80
      */
     private $id;
 
-    /**
-     * @var User
-     */
-    private $user;
+    private User $user;
 
     /**
      * @Serializer\Accessor(getter="getFoo", setter="setFoo")
diff --git a/tests/Functional/Entity/VirtualProperty81.php b/tests/Functional/Entity/VirtualProperty81.php
index 7dbbf5649..3d51a2a31 100644
--- a/tests/Functional/Entity/VirtualProperty81.php
+++ b/tests/Functional/Entity/VirtualProperty81.php
@@ -31,10 +31,7 @@ class VirtualProperty81
     #[Serializer\Expose]
     private $id;
 
-    /**
-     * @var User
-     */
-    private $user;
+    private User $user;
 
     #[Serializer\Accessor(getter: 'getFoo', setter: 'setFoo')]
     #[Serializer\Type('string')]
diff --git a/tests/Functional/ModelDescriber/NameConverter.php b/tests/Functional/ModelDescriber/NameConverter.php
index 55502c579..cb42c59f3 100644
--- a/tests/Functional/ModelDescriber/NameConverter.php
+++ b/tests/Functional/ModelDescriber/NameConverter.php
@@ -18,10 +18,7 @@
 
 class NameConverter implements AdvancedNameConverterInterface
 {
-    /**
-     * @var MetadataAwareNameConverter
-     */
-    private $inner;
+    private MetadataAwareNameConverter $inner;
 
     public function __construct(MetadataAwareNameConverter $inner)
     {