diff --git a/Tests/Normalizer/AbstractObjectNormalizerTest.php b/Tests/Normalizer/AbstractObjectNormalizerTest.php
index 2084d83b..49f19666 100644
--- a/Tests/Normalizer/AbstractObjectNormalizerTest.php
+++ b/Tests/Normalizer/AbstractObjectNormalizerTest.php
@@ -837,12 +837,12 @@ public function testDenormalizeWithCorrectOrderOfAttributeAndProperty()
         $this->assertSame('nested-id', $test->id);
     }
 
-    public function testNormalizeWithIgnoreAnnotationAndPrivateProperties()
+    public function testNormalizeWithIgnoreAttributeAndPrivateProperties()
     {
-        $classMetadataFactory = new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader()));
+        $classMetadataFactory = new ClassMetadataFactory(new AttributeLoader());
         $serializer = new Serializer([new ObjectNormalizer($classMetadataFactory)]);
 
-        $this->assertSame(['foo' => 'foo'], $serializer->normalize(new ObjectDummyWithIgnoreAnnotationAndPrivateProperty()));
+        $this->assertSame(['foo' => 'foo'], $serializer->normalize(new ObjectDummyWithIgnoreAttributeAndPrivateProperty()));
     }
 
     public function testDenormalizeUntypedFormat()
@@ -1054,11 +1054,11 @@ class ObjectDummyWithContextAttributeSkipNullValues
     public ?string $propertyWithNullSkipNullValues = null;
 }
 
-class ObjectDummyWithIgnoreAnnotationAndPrivateProperty
+class ObjectDummyWithIgnoreAttributeAndPrivateProperty
 {
     public $foo = 'foo';
 
-    /** @Ignore */
+    #[Ignore]
     public $ignored = 'ignored';
 
     private $private = 'private';
diff --git a/Tests/Normalizer/GetSetMethodNormalizerTest.php b/Tests/Normalizer/GetSetMethodNormalizerTest.php
index 5e9be09b..1d471981 100644
--- a/Tests/Normalizer/GetSetMethodNormalizerTest.php
+++ b/Tests/Normalizer/GetSetMethodNormalizerTest.php
@@ -16,7 +16,7 @@
 use Symfony\Component\PropertyInfo\Extractor\PhpDocExtractor;
 use Symfony\Component\PropertyInfo\Extractor\ReflectionExtractor;
 use Symfony\Component\PropertyInfo\PropertyInfoExtractor;
-use Symfony\Component\Serializer\Annotation\DiscriminatorMap;
+use Symfony\Component\Serializer\Attribute\DiscriminatorMap;
 use Symfony\Component\Serializer\Exception\LogicException;
 use Symfony\Component\Serializer\Mapping\ClassDiscriminatorFromClassMetadata;
 use Symfony\Component\Serializer\Mapping\Factory\ClassMetadataFactory;
@@ -494,7 +494,7 @@ protected function getNormalizerForSkipUninitializedValues(): NormalizerInterfac
 
     public function testNormalizeWithDiscriminator()
     {
-        $classMetadataFactory = new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader()));
+        $classMetadataFactory = new ClassMetadataFactory(new AttributeLoader());
         $discriminator = new ClassDiscriminatorFromClassMetadata($classMetadataFactory);
         $normalizer = new GetSetMethodNormalizer($classMetadataFactory, null, null, $discriminator);
 
@@ -503,7 +503,7 @@ public function testNormalizeWithDiscriminator()
 
     public function testDenormalizeWithDiscriminator()
     {
-        $classMetadataFactory = new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader()));
+        $classMetadataFactory = new ClassMetadataFactory(new AttributeLoader());
         $discriminator = new ClassDiscriminatorFromClassMetadata($classMetadataFactory);
         $normalizer = new GetSetMethodNormalizer($classMetadataFactory, null, null, $discriminator);
 
@@ -777,12 +777,10 @@ public function __call($key, $value)
     }
 }
 
-/**
- * @DiscriminatorMap(typeProperty="type", mapping={
- *     "one" = GetSetMethodDiscriminatedDummyOne::class,
- *     "two" = GetSetMethodDiscriminatedDummyTwo::class,
- * })
- */
+#[DiscriminatorMap(typeProperty: 'type', mapping: [
+    'one' => GetSetMethodDiscriminatedDummyOne::class,
+    'two' => GetSetMethodDiscriminatedDummyTwo::class,
+])]
 interface GetSetMethodDummyInterface
 {
 }
diff --git a/Tests/Normalizer/PropertyNormalizerTest.php b/Tests/Normalizer/PropertyNormalizerTest.php
index 8461ecee..631111d2 100644
--- a/Tests/Normalizer/PropertyNormalizerTest.php
+++ b/Tests/Normalizer/PropertyNormalizerTest.php
@@ -15,7 +15,7 @@
 use Symfony\Component\PropertyInfo\Extractor\PhpDocExtractor;
 use Symfony\Component\PropertyInfo\Extractor\ReflectionExtractor;
 use Symfony\Component\PropertyInfo\PropertyInfoExtractor;
-use Symfony\Component\Serializer\Annotation\DiscriminatorMap;
+use Symfony\Component\Serializer\Attribute\DiscriminatorMap;
 use Symfony\Component\Serializer\Exception\LogicException;
 use Symfony\Component\Serializer\Mapping\ClassDiscriminatorFromClassMetadata;
 use Symfony\Component\Serializer\Mapping\Factory\ClassMetadataFactory;
@@ -499,7 +499,7 @@ protected function getNormalizerForSkipUninitializedValues(): NormalizerInterfac
 
     public function testNormalizeWithDiscriminator()
     {
-        $classMetadataFactory = new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader()));
+        $classMetadataFactory = new ClassMetadataFactory(new AttributeLoader());
         $discriminator = new ClassDiscriminatorFromClassMetadata($classMetadataFactory);
         $normalizer = new PropertyNormalizer($classMetadataFactory, null, null, $discriminator);
 
@@ -508,7 +508,7 @@ public function testNormalizeWithDiscriminator()
 
     public function testDenormalizeWithDiscriminator()
     {
-        $classMetadataFactory = new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader()));
+        $classMetadataFactory = new ClassMetadataFactory(new AttributeLoader());
         $discriminator = new ClassDiscriminatorFromClassMetadata($classMetadataFactory);
         $normalizer = new PropertyNormalizer($classMetadataFactory, null, null, $discriminator);
 
@@ -621,12 +621,10 @@ public function getIntMatrix(): array
     }
 }
 
-/**
- * @DiscriminatorMap(typeProperty="type", mapping={
- *     "one" = PropertyDiscriminatedDummyOne::class,
- *     "two" = PropertyDiscriminatedDummyTwo::class,
- * })
- */
+#[DiscriminatorMap(typeProperty: 'type', mapping: [
+    'one' => PropertyDiscriminatedDummyOne::class,
+    'two' => PropertyDiscriminatedDummyTwo::class,
+])]
 interface PropertyDummyInterface
 {
 }