diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 62d9ce3f8ea..d0094de6cc7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -319,6 +319,7 @@ jobs:
           - api-platform/doctrine-orm
           - api-platform/doctrine-odm
           - api-platform/metadata
+          - api-platform/hal
           - api-platform/hydra
           - api-platform/json-api
           - api-platform/json-schema
diff --git a/src/GraphQl/composer.json b/src/GraphQl/composer.json
index 41ec3eb4269..e31e13366ae 100644
--- a/src/GraphQl/composer.json
+++ b/src/GraphQl/composer.json
@@ -23,7 +23,7 @@
         "php": ">=8.2",
         "api-platform/metadata": "^4.3",
         "api-platform/state": "^4.3",
-        "api-platform/serializer": "^4.3.7",
+        "api-platform/serializer": "^4.3.8",
         "symfony/property-info": "^7.1 || ^8.0",
         "symfony/serializer": "^6.4 || ^7.1 || ^8.0",
         "symfony/type-info": "^7.3 || ^8.0",
diff --git a/src/Hal/Tests/Fixtures/Dummy.php b/src/Hal/Tests/Fixtures/Dummy.php
index 67569cb2851..0bdcb668167 100644
--- a/src/Hal/Tests/Fixtures/Dummy.php
+++ b/src/Hal/Tests/Fixtures/Dummy.php
@@ -16,8 +16,15 @@
 class Dummy
 {
     public int $id;
-    private RelatedDummy $relatedDummy;
+    public ?RelatedDummy $relatedDummy = null;
     private string $name;
+    private ?string $alias = null;
+    private ?string $description = null;
+
+    public function setId(int $id): void
+    {
+        $this->id = $id;
+    }
 
     public function getName(): string
     {
@@ -29,12 +36,32 @@ public function setName(string $name): void
         $this->name = $name;
     }
 
-    public function getRelatedDummy(): RelatedDummy
+    public function getAlias(): ?string
+    {
+        return $this->alias;
+    }
+
+    public function setAlias(?string $alias): void
+    {
+        $this->alias = $alias;
+    }
+
+    public function getDescription(): ?string
+    {
+        return $this->description;
+    }
+
+    public function setDescription(?string $description): void
+    {
+        $this->description = $description;
+    }
+
+    public function getRelatedDummy(): ?RelatedDummy
     {
         return $this->relatedDummy;
     }
 
-    public function setRelatedDummy(RelatedDummy $relatedDummy): void
+    public function setRelatedDummy(?RelatedDummy $relatedDummy): void
     {
         $this->relatedDummy = $relatedDummy;
     }
diff --git a/src/Hal/Tests/Fixtures/MaxDepthDummy.php b/src/Hal/Tests/Fixtures/MaxDepthDummy.php
index a9240017d23..ab2f526aff0 100644
--- a/src/Hal/Tests/Fixtures/MaxDepthDummy.php
+++ b/src/Hal/Tests/Fixtures/MaxDepthDummy.php
@@ -33,5 +33,5 @@ class MaxDepthDummy
     #[ApiProperty(fetchEager: false)]
     #[Groups(['default'])]
     #[MaxDepth(1)]
-    public MaxDepthDummy $child;
+    public ?MaxDepthDummy $child = null;
 }
diff --git a/src/Hal/Tests/JsonSchema/SchemaFactoryTest.php b/src/Hal/Tests/JsonSchema/SchemaFactoryTest.php
index 43a3a4a51a2..fc16bc2e886 100644
--- a/src/Hal/Tests/JsonSchema/SchemaFactoryTest.php
+++ b/src/Hal/Tests/JsonSchema/SchemaFactoryTest.php
@@ -62,7 +62,7 @@ protected function setUp(): void
             definitionNameFactory: $definitionNameFactory,
         );
 
-        $this->schemaFactory = new SchemaFactory($baseSchemaFactory);
+        $this->schemaFactory = new SchemaFactory($baseSchemaFactory, $definitionNameFactory, $resourceMetadataFactory);
     }
 
     public function testBuildSchema(): void
diff --git a/src/Hal/Tests/Serializer/ItemNormalizerTest.php b/src/Hal/Tests/Serializer/ItemNormalizerTest.php
index f45d91623b6..e3860cedcea 100644
--- a/src/Hal/Tests/Serializer/ItemNormalizerTest.php
+++ b/src/Hal/Tests/Serializer/ItemNormalizerTest.php
@@ -14,20 +14,20 @@
 namespace ApiPlatform\Hal\Tests\Serializer;
 
 use ApiPlatform\Hal\Serializer\ItemNormalizer;
+use ApiPlatform\Hal\Tests\Fixtures\ApiResource\Issue5452\ActivableInterface;
+use ApiPlatform\Hal\Tests\Fixtures\ApiResource\Issue5452\Author;
+use ApiPlatform\Hal\Tests\Fixtures\ApiResource\Issue5452\Book;
+use ApiPlatform\Hal\Tests\Fixtures\ApiResource\Issue5452\Library;
+use ApiPlatform\Hal\Tests\Fixtures\ApiResource\Issue5452\TimestampableInterface;
+use ApiPlatform\Hal\Tests\Fixtures\Dummy;
+use ApiPlatform\Hal\Tests\Fixtures\MaxDepthDummy;
+use ApiPlatform\Hal\Tests\Fixtures\RelatedDummy;
 use ApiPlatform\Metadata\ApiProperty;
 use ApiPlatform\Metadata\IriConverterInterface;
 use ApiPlatform\Metadata\Property\Factory\PropertyMetadataFactoryInterface;
 use ApiPlatform\Metadata\Property\Factory\PropertyNameCollectionFactoryInterface;
 use ApiPlatform\Metadata\Property\PropertyNameCollection;
 use ApiPlatform\Metadata\ResourceClassResolverInterface;
-use ApiPlatform\Tests\Fixtures\TestBundle\ApiResource\Issue5452\ActivableInterface;
-use ApiPlatform\Tests\Fixtures\TestBundle\ApiResource\Issue5452\Author;
-use ApiPlatform\Tests\Fixtures\TestBundle\ApiResource\Issue5452\Book;
-use ApiPlatform\Tests\Fixtures\TestBundle\ApiResource\Issue5452\Library;
-use ApiPlatform\Tests\Fixtures\TestBundle\ApiResource\Issue5452\TimestampableInterface;
-use ApiPlatform\Tests\Fixtures\TestBundle\Entity\Dummy;
-use ApiPlatform\Tests\Fixtures\TestBundle\Entity\MaxDepthDummy;
-use ApiPlatform\Tests\Fixtures\TestBundle\Entity\RelatedDummy;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\Attributes\Group;
 use PHPUnit\Framework\TestCase;
@@ -104,7 +104,7 @@ public function testSupportsNormalization(): void
         $this->assertFalse($normalizer->supportsNormalization($dummy, 'xml'));
         $this->assertFalse($normalizer->supportsNormalization($std, $normalizer::FORMAT));
         $this->assertEmpty($normalizer->getSupportedTypes('xml'));
-        $this->assertSame(['object' => true], $normalizer->getSupportedTypes($normalizer::FORMAT));
+        $this->assertSame(['object' => false], $normalizer->getSupportedTypes($normalizer::FORMAT));
     }
 
     public function testNormalize(): void
diff --git a/src/Hal/composer.json b/src/Hal/composer.json
index 3a7015ff2c1..07389f44c99 100644
--- a/src/Hal/composer.json
+++ b/src/Hal/composer.json
@@ -25,7 +25,7 @@
         "api-platform/state": "^4.3",
         "api-platform/metadata": "^4.3",
         "api-platform/documentation": "^4.3",
-        "api-platform/serializer": "^4.3.7",
+        "api-platform/serializer": "^4.3.8",
         "symfony/type-info": "^7.3 || ^8.0"
     },
     "autoload": {
@@ -65,8 +65,9 @@
         "test": "./vendor/bin/phpunit"
     },
     "require-dev": {
-        "phpunit/phpunit": "^11.5 || ^12.2",
-        "api-platform/json-schema": "^4.3"
+        "api-platform/json-schema": "^4.3",
+        "phpspec/prophecy-phpunit": "^2.2",
+        "phpunit/phpunit": "^11.5 || ^12.2"
     },
     "minimum-stability": "beta",
     "prefer-stable": true
diff --git a/src/JsonApi/composer.json b/src/JsonApi/composer.json
index 0b6c7b34196..c638ec1bf60 100644
--- a/src/JsonApi/composer.json
+++ b/src/JsonApi/composer.json
@@ -25,7 +25,7 @@
         "api-platform/documentation": "^4.3",
         "api-platform/json-schema": "^4.3",
         "api-platform/metadata": "^4.3",
-        "api-platform/serializer": "^4.3.7",
+        "api-platform/serializer": "^4.3.8",
         "api-platform/state": "^4.3",
         "symfony/error-handler": "^6.4 || ^7.0 || ^8.0",
         "symfony/http-foundation": "^6.4.14 || ^7.0 || ^8.0",