diff --git a/composer.json b/composer.json
index e52628c..f7c340c 100644
--- a/composer.json
+++ b/composer.json
@@ -26,17 +26,17 @@
     }
   },
   "require-dev": {
-    "symfony/phpunit-bridge": "^7.2",
-    "symfony/var-dumper": "^7.0",
-    "symfony/framework-bundle": "^7.0",
-    "symfony/yaml": "^7.0",
-    "symfony/translation": "^7.0",
+    "symfony/phpunit-bridge": "^7.4|^8.0",
+    "symfony/var-dumper": "^7.0|^8.0",
+    "symfony/framework-bundle": "^7.0|^8.0",
+    "symfony/yaml": "^7.0|^8.0",
+    "symfony/translation": "^7.0|^8.0",
     "assoconnect/php-quality-config": "^2.2",
     "phpstan/phpstan-symfony": "^2"
   },
   "require": {
     "php": "^8.4",
-    "symfony/cache": "^7.0",
+    "symfony/cache": "^7.0|^8.0",
     "symfony/contracts": "^2.5|^3.4",
     "phpmailer/phpmailer": "^6.6",
     "thecodingmachine/safe": "^3"
diff --git a/tests/Resolver/BounceTypeResolverTest.php b/tests/Resolver/BounceTypeResolverTest.php
index d364039..cee38b9 100644
--- a/tests/Resolver/BounceTypeResolverTest.php
+++ b/tests/Resolver/BounceTypeResolverTest.php
@@ -5,11 +5,12 @@
 namespace AssoConnect\SmtpToolbox\Tests\Resolver;
 
 use AssoConnect\SmtpToolbox\Resolver\BounceTypeResolver;
+use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
 class BounceTypeResolverTest extends TestCase
 {
-    /** @dataProvider provideBounceReasons */
+    #[DataProvider('provideBounceReasons')]
     public function testResolveBounceMessagesCorrectly(string $expected, string $bounceReason): void
     {
         $resolver = new BounceTypeResolver();
diff --git a/tests/Resolver/MxServersResolverTest.php b/tests/Resolver/MxServersResolverTest.php
index 884543c..9a971b2 100644
--- a/tests/Resolver/MxServersResolverTest.php
+++ b/tests/Resolver/MxServersResolverTest.php
@@ -5,6 +5,7 @@
 namespace AssoConnect\SmtpToolbox\Tests\Resolver;
 
 use AssoConnect\SmtpToolbox\Resolver\MxServersResolver;
+use PHPUnit\Framework\Attributes\Group;
 use PHPUnit\Framework\TestCase;
 use Symfony\Bridge\PhpUnit\DnsMock;
 use Symfony\Component\Cache\Adapter\ArrayAdapter;
@@ -33,10 +34,8 @@ public function testCacheIsUsed(): void
         self::assertTrue($isHitAfter);
     }
 
-    /**
-     * @group functional
-     * @group dns-sensitive
-     */
+    #[Group('functional')]
+    #[Group('dns-sensitive')]
     public function testDns(): void
     {
         DnsMock::withMockedHosts([
diff --git a/tests/Resolver/ProviderResolverTest.php b/tests/Resolver/ProviderResolverTest.php
index b0f88cf..be88ac5 100644
--- a/tests/Resolver/ProviderResolverTest.php
+++ b/tests/Resolver/ProviderResolverTest.php
@@ -6,13 +6,12 @@
 
 use AssoConnect\SmtpToolbox\Resolver\ProviderResolver;
 use AssoConnect\SmtpToolbox\Specification\EmailAddressIsFromAProviderSpecification;
+use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
 class ProviderResolverTest extends TestCase
 {
-    /**
-     * @dataProvider provideAddressesAndProviders
-     */
+    #[DataProvider('provideAddressesAndProviders')]
     public function testProviderResolverReturnsTheRightProvider(string $address, ?string $provider): void
     {
         $resolver = new ProviderResolver(
diff --git a/tests/Specification/BounceIsCausedByInactiveUserSpecificationTest.php b/tests/Specification/BounceIsCausedByInactiveUserSpecificationTest.php
index 5bbeedf..8766d92 100644
--- a/tests/Specification/BounceIsCausedByInactiveUserSpecificationTest.php
+++ b/tests/Specification/BounceIsCausedByInactiveUserSpecificationTest.php
@@ -5,11 +5,12 @@
 namespace AssoConnect\SmtpToolbox\Tests\Specification;
 
 use AssoConnect\SmtpToolbox\Specification\BounceIsCausedByInactiveUserSpecification;
+use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
 class BounceIsCausedByInactiveUserSpecificationTest extends TestCase
 {
-    /** @dataProvider provideMessages */
+    #[DataProvider('provideMessages')]
     public function testSpecificationWorks(string $message, bool $isSpam): void
     {
         $spec = new BounceIsCausedByInactiveUserSpecification();
diff --git a/tests/Specification/BounceIsCausedByOverQuotaSpecificationTest.php b/tests/Specification/BounceIsCausedByOverQuotaSpecificationTest.php
index 94dc64a..267b927 100644
--- a/tests/Specification/BounceIsCausedByOverQuotaSpecificationTest.php
+++ b/tests/Specification/BounceIsCausedByOverQuotaSpecificationTest.php
@@ -5,11 +5,12 @@
 namespace AssoConnect\SmtpToolbox\Tests\Specification;
 
 use AssoConnect\SmtpToolbox\Specification\BounceIsCausedByOverQuotaSpecification;
+use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
 class BounceIsCausedByOverQuotaSpecificationTest extends TestCase
 {
-    /** @dataProvider provideMessages */
+    #[DataProvider('provideMessages')]
     public function testSpecificationWorks(string $message, bool $isSpam): void
     {
         $spec = new BounceIsCausedByOverQuotaSpecification();
diff --git a/tests/Specification/BounceIsCausedByUnknownUserSpecificationTest.php b/tests/Specification/BounceIsCausedByUnknownUserSpecificationTest.php
index 57c71c5..60e6107 100644
--- a/tests/Specification/BounceIsCausedByUnknownUserSpecificationTest.php
+++ b/tests/Specification/BounceIsCausedByUnknownUserSpecificationTest.php
@@ -5,11 +5,12 @@
 namespace AssoConnect\SmtpToolbox\Tests\Specification;
 
 use AssoConnect\SmtpToolbox\Specification\BounceIsCausedByUnknownUserSpecification;
+use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
 class BounceIsCausedByUnknownUserSpecificationTest extends TestCase
 {
-    /** @dataProvider provideMessages */
+    #[DataProvider('provideMessages')]
     public function testSpecificationWorks(string $message, bool $isSpam): void
     {
         $spec = new BounceIsCausedByUnknownUserSpecification();
diff --git a/tests/Specification/BounceIsSpamRelatedSpecificationTest.php b/tests/Specification/BounceIsSpamRelatedSpecificationTest.php
index 923d9db..6cbab22 100644
--- a/tests/Specification/BounceIsSpamRelatedSpecificationTest.php
+++ b/tests/Specification/BounceIsSpamRelatedSpecificationTest.php
@@ -6,11 +6,12 @@
 
 use AssoConnect\SmtpToolbox\Resolver\BounceTypeResolver;
 use AssoConnect\SmtpToolbox\Specification\BounceIsSpamRelatedSpecification;
+use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
 class BounceIsSpamRelatedSpecificationTest extends TestCase
 {
-    /** @dataProvider provideMessages */
+    #[DataProvider('provideMessages')]
     public function testSpecificationWorks(string $message, bool $isSpam): void
     {
         $spec = new BounceIsSpamRelatedSpecification(new BounceTypeResolver());
diff --git a/tests/Specification/BounceReasonIsUnknownSpecificationTest.php b/tests/Specification/BounceReasonIsUnknownSpecificationTest.php
index c47373f..baf51b7 100644
--- a/tests/Specification/BounceReasonIsUnknownSpecificationTest.php
+++ b/tests/Specification/BounceReasonIsUnknownSpecificationTest.php
@@ -5,11 +5,12 @@
 namespace AssoConnect\SmtpToolbox\Tests\Specification;
 
 use AssoConnect\SmtpToolbox\Specification\BounceReasonIsUnknownSpecification;
+use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
 class BounceReasonIsUnknownSpecificationTest extends TestCase
 {
-    /** @dataProvider provideMessages */
+    #[DataProvider('provideMessages')]
     public function testSpecificationWorks(string $message, bool $isSpam): void
     {
         $spec = new BounceReasonIsUnknownSpecification();
diff --git a/tests/Specification/EmailAddressIsFromACountrySpecificationTest.php b/tests/Specification/EmailAddressIsFromACountrySpecificationTest.php
index aeabce0..fa8bc3c 100644
--- a/tests/Specification/EmailAddressIsFromACountrySpecificationTest.php
+++ b/tests/Specification/EmailAddressIsFromACountrySpecificationTest.php
@@ -7,11 +7,12 @@
 use AssoConnect\SmtpToolbox\Specification\EmailAddressIsFromACountrySpecification;
 use AssoConnect\SmtpToolbox\Specification\EmailAddressIsFromAProviderSpecification;
 use AssoConnect\SmtpToolbox\Tests\Resolver\MxServersResolverTestFactory;
+use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
 class EmailAddressIsFromACountrySpecificationTest extends TestCase
 {
-    /** @dataProvider provideEmailAddresses */
+    #[DataProvider('provideEmailAddresses')]
     public function testSpecificationWorks(string $emailAddress, string $country, bool $isSatisfiedBy): void
     {
         $spec = new EmailAddressIsFromACountrySpecification(
diff --git a/tests/Specification/EmailAddressIsFromAProviderSpecificationTest.php b/tests/Specification/EmailAddressIsFromAProviderSpecificationTest.php
index 97d79b1..fb7bcaf 100644
--- a/tests/Specification/EmailAddressIsFromAProviderSpecificationTest.php
+++ b/tests/Specification/EmailAddressIsFromAProviderSpecificationTest.php
@@ -6,11 +6,12 @@
 
 use AssoConnect\SmtpToolbox\Specification\EmailAddressIsFromAProviderSpecification;
 use AssoConnect\SmtpToolbox\Tests\Resolver\MxServersResolverTestFactory;
+use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
 class EmailAddressIsFromAProviderSpecificationTest extends TestCase
 {
-    /** @dataProvider provideEmailAddresses */
+    #[DataProvider('provideEmailAddresses')]
     public function testSpecificationWorks(string $emailAddress, string $providerName, bool $isSatisfiedBy): void
     {
         $spec = new EmailAddressIsFromAProviderSpecification(
diff --git a/tests/Translatable/BounceReasonTranslatableTest.php b/tests/Translatable/BounceReasonTranslatableTest.php
index c0ce92e..ef34156 100644
--- a/tests/Translatable/BounceReasonTranslatableTest.php
+++ b/tests/Translatable/BounceReasonTranslatableTest.php
@@ -5,14 +5,13 @@
 namespace AssoConnect\SmtpToolbox\Tests\Translatable;
 
 use AssoConnect\SmtpToolbox\Translatable\BounceReasonTranslatable;
+use PHPUnit\Framework\Attributes\DataProvider;
 use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
 use Symfony\Contracts\Translation\TranslatorInterface;
 
 class BounceReasonTranslatableTest extends KernelTestCase
 {
-    /**
-     * @dataProvider providerTrans
-     */
+    #[DataProvider('providerTrans')]
     public function testBounceReasonTranslatable(string $reason, string $expectedTranslationKey): void
     {
         $translator = static::getContainer()->get(TranslatorInterface::class);
diff --git a/tests/Validation/SmtpValidatorTest.php b/tests/Validation/SmtpValidatorTest.php
index c85f32e..3fe1034 100644
--- a/tests/Validation/SmtpValidatorTest.php
+++ b/tests/Validation/SmtpValidatorTest.php
@@ -15,6 +15,7 @@
 use AssoConnect\SmtpToolbox\Specification\ExceptionComesFromTemporaryFailureSpecification;
 use AssoConnect\SmtpToolbox\Tests\Resolver\MxServersResolverTestFactory;
 use AssoConnect\SmtpToolbox\Validation\SmtpValidator;
+use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 use Psr\Log\NullLogger;
 
@@ -39,10 +40,10 @@ public function setUp(): void
     }
 
     /**
-     * @dataProvider provideEmailAddresses
      * @param class-string<ValidationStatusDtoInterface> $expectedDtoClass
      * @throws SmtpTemporaryFailureException
      */
+    #[DataProvider('provideEmailAddresses')]
     public function testClientWorks(string $email, string $expectedDtoClass): void
     {
         self::assertInstanceOf($expectedDtoClass, $this->validator->validate($email));