diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index d4df5435..0940f11b 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -6,6 +6,7 @@
     xsi:noNamespaceSchemaLocation="vendor/phpunit/phpunit/phpunit.xsd"
     colors="true"
     beStrictAboutOutputDuringTests="true"
+    processIsolation="true"
 >
 
     <php>
@@ -18,11 +19,4 @@
             <directory>tests/Test</directory>
         </testsuite>
     </testsuites>
-
-    <groups>
-        <exclude>
-            <group>mysql</group>
-            <group>pgsql</group>
-        </exclude>
-    </groups>
 </phpunit>
diff --git a/tests/App/Entity/User.php b/tests/App/Entity/User.php
index 2e328824..a2cf2296 100644
--- a/tests/App/Entity/User.php
+++ b/tests/App/Entity/User.php
@@ -16,48 +16,24 @@
 use Doctrine\DBAL\Types\Types;
 use Doctrine\ORM\Mapping as ORM;
 
-/**
- * @ORM\Entity
- *
- * @ORM\Table(name="liip_user")
- */
 #[ORM\Entity]
 #[ORM\Table(name: 'liip_user')]
 class User
 {
-    /**
-     * @ORM\Id
-     *
-     * @ORM\Column(type="integer")
-     *
-     * @ORM\GeneratedValue(strategy="AUTO")
-     */
     #[ORM\Id]
     #[ORM\Column(type: Types::INTEGER)]
     #[ORM\GeneratedValue(strategy: 'AUTO')]
     private ?int $id = null;
 
-    /**
-     * @ORM\Column
-     */
     #[ORM\Column]
     private string $name;
 
-    /**
-     * @ORM\Column
-     */
     #[ORM\Column]
     private string $salt;
 
-    /**
-     * @ORM\Column
-     */
     #[ORM\Column]
     private string $email;
 
-    /**
-     * @ORM\Column(nullable=true)
-     */
     #[ORM\Column(nullable: true)]
     private ?string $dummyText = null;
 
diff --git a/tests/Test/ConfigEventsTest.php b/tests/Test/ConfigEventsTest.php
index 8bb064c5..d4677eb0 100644
--- a/tests/Test/ConfigEventsTest.php
+++ b/tests/Test/ConfigEventsTest.php
@@ -13,7 +13,6 @@
 
 namespace Liip\Acme\Tests\Test;
 
-use Doctrine\Common\Annotations\Annotation\IgnoreAnnotation;
 use Liip\Acme\Tests\AppConfigEvents\AppConfigEventsKernel;
 use Liip\Acme\Tests\AppConfigEvents\EventListener\FixturesSubscriber;
 use Liip\Acme\Tests\Traits\ContainerProvider;
@@ -21,6 +20,8 @@
 use Liip\TestFixturesBundle\Services\DatabaseToolCollection;
 use Liip\TestFixturesBundle\Services\DatabaseTools\AbstractDatabaseTool;
 use Liip\TestFixturesBundle\Services\DatabaseTools\ORMSqliteDatabaseTool;
+use PHPUnit\Framework\Attributes\DataProvider;
+use PHPUnit\Framework\Attributes\PreserveGlobalState;
 use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
 
 /**
@@ -30,14 +31,9 @@
  * Tests/App/AppKernel.php.
  * So it must be loaded in a separate process.
  *
- * @runTestsInSeparateProcesses
- *
- * @preserveGlobalState disabled
- *
- * @IgnoreAnnotation("dataProvider")
- *
  * @internal
  */
+#[PreserveGlobalState(false)]
 class ConfigEventsTest extends KernelTestCase
 {
     use ContainerProvider;
@@ -88,10 +84,9 @@ public function testLoadEmptyFixturesAndCheckEvents(): void
      * Check that events are called.
      *
      * We disable the cache to ensure that all the code is executed.
-     *
-     * @dataProvider fixturesEventsProvider
      */
-    public function testLoadEmptyFixturesAndCheckEventsAreCalled(string $eventName, string $methodName, int $numberOfInvocations, bool $withCache = true): void
+    #[DataProvider('fixturesEventsProvider')]
+    public function testLoadEmptyFixturesAndCheckEventsAreCalled(string $eventName, string $methodName, int $numberOfInvocations, ?bool $withCache = true): void
     {
         /** @var AbstractDatabaseTool $databaseTool */
         $databaseTool = $this->getTestContainer()->get(DatabaseToolCollection::class)->get();
@@ -127,9 +122,8 @@ public function testLoadEmptyFixturesAndCheckEventsAreCalled(string $eventName,
 
     /**
      * We disable the cache to ensure that other events are called.
-     *
-     * @dataProvider fixturesEventsProvider
      */
+    #[DataProvider('fixturesEventsProvider')]
     public function testLoadEmptyFixturesAndCheckEventsAreCalledWithoutCache(string $eventName, string $methodName, int $numberOfInvocations): void
     {
         // Swap 0 → 1 and 1 → 0
@@ -138,15 +132,13 @@ public function testLoadEmptyFixturesAndCheckEventsAreCalledWithoutCache(string
         $this->testLoadEmptyFixturesAndCheckEventsAreCalled($eventName, $methodName, $numberOfInvocations, false);
     }
 
-    public static function fixturesEventsProvider(): array
+    public static function fixturesEventsProvider(): iterable
     {
-        return [
-            [LiipTestFixturesEvents::PRE_FIXTURE_BACKUP_RESTORE, 'preFixtureBackupRestore', 1],
-            [LiipTestFixturesEvents::POST_FIXTURE_SETUP, 'postFixtureSetup', 0],
-            [LiipTestFixturesEvents::POST_FIXTURE_BACKUP_RESTORE, 'postFixtureBackupRestore', 1],
-            [LiipTestFixturesEvents::PRE_REFERENCE_SAVE, 'preReferenceSave', 0],
-            [LiipTestFixturesEvents::POST_REFERENCE_SAVE, 'postReferenceSave', 0],
-        ];
+        yield 'preFixtureBackupRestore' => [LiipTestFixturesEvents::PRE_FIXTURE_BACKUP_RESTORE, 'preFixtureBackupRestore', 1];
+        yield 'postFixtureSetup' => [LiipTestFixturesEvents::POST_FIXTURE_SETUP, 'postFixtureSetup', 0];
+        yield 'postFixtureBackupRestore' => [LiipTestFixturesEvents::POST_FIXTURE_BACKUP_RESTORE, 'postFixtureBackupRestore', 1];
+        yield 'preReferenceSave' => [LiipTestFixturesEvents::PRE_REFERENCE_SAVE, 'preReferenceSave', 0];
+        yield 'postReferenceSave' => [LiipTestFixturesEvents::POST_REFERENCE_SAVE, 'postReferenceSave', 0];
     }
 
     protected static function getKernelClass(): string
diff --git a/tests/Test/ConfigMongodbTest.php b/tests/Test/ConfigMongodbTest.php
index 1155ea6a..f43de942 100755
--- a/tests/Test/ConfigMongodbTest.php
+++ b/tests/Test/ConfigMongodbTest.php
@@ -2,6 +2,17 @@
 
 declare(strict_types=1);
 
+/*
+ * This file is part of the Liip/TestFixturesBundle
+ *
+ * (c) Lukas Kahwe Smith <smith@pooteeweet.org>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+namespace Liip\Acme\Tests\Test;
+
 /*
  * This file is part of the Liip/TestFixturesBundle
  *
@@ -12,6 +23,7 @@
  */
 
 use Doctrine\Bundle\MongoDBBundle\DoctrineMongoDBBundle;
+use Doctrine\Common\DataFixtures\Executor\MongoDBExecutor;
 use Doctrine\Common\DataFixtures\ProxyReferenceRepository;
 use Doctrine\ODM\MongoDB\Repository\DocumentRepository;
 use Liip\Acme\Tests\AppConfigMongodb\AppConfigMongodbKernel;
@@ -21,6 +33,7 @@
 use Liip\TestFixturesBundle\Services\DatabaseToolCollection;
 use Liip\TestFixturesBundle\Services\DatabaseTools\AbstractDatabaseTool;
 use Liip\TestFixturesBundle\Services\DatabaseTools\MongoDBDatabaseTool;
+use PHPUnit\Framework\Attributes\PreserveGlobalState;
 use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
 
 /**
@@ -30,12 +43,9 @@
  * Tests/App/AppKernel.php.
  * So it must be loaded in a separate process.
  *
- * @#runTestsInSeparateProcesses
- *
- * @preserveGlobalState disabled
- *
  * @internal
  */
+#[PreserveGlobalState(false)]
 class ConfigMongodbTest extends KernelTestCase
 {
     use ContainerProvider;
@@ -75,7 +85,7 @@ public function testLoadFixturesMongodb(): void
         ]);
 
         $this->assertInstanceOf(
-            Doctrine\Common\DataFixtures\Executor\MongoDBExecutor::class,
+            MongoDBExecutor::class,
             $fixtures
         );
 
diff --git a/tests/Test/ConfigMysqlCacheDbTest.php b/tests/Test/ConfigMysqlCacheDbTest.php
index e4d01955..7b3a03c8 100644
--- a/tests/Test/ConfigMysqlCacheDbTest.php
+++ b/tests/Test/ConfigMysqlCacheDbTest.php
@@ -13,9 +13,10 @@
 
 namespace Liip\Acme\Tests\Test;
 
-use Doctrine\Common\Annotations\Annotation\IgnoreAnnotation;
 use Liip\Acme\Tests\App\Entity\User;
 use Liip\Acme\Tests\AppConfigMysqlCacheDb\AppConfigMysqlKernelCacheDb;
+use PHPUnit\Framework\Attributes\Group;
+use PHPUnit\Framework\Attributes\PreserveGlobalState;
 
 /**
  * Test MySQL database with database caching enabled.
@@ -31,19 +32,11 @@
  * Tests/App/AppKernel.php.
  * So it must be loaded in a separate process.
  *
- * @runTestsInSeparateProcesses
- *
- * @preserveGlobalState disabled
- *
- * @IgnoreAnnotation("group")
- *
  * @internal
  */
+#[PreserveGlobalState(false)]
 class ConfigMysqlCacheDbTest extends ConfigMysqlTest
 {
-    /**
-     * @group mysql
-     */
     public function testLoadFixturesAndCheckBackup(): void
     {
         $this->assertTrue($this->databaseTool->isDatabaseCacheEnabled());
@@ -114,9 +107,6 @@ public function testLoadFixturesAndCheckBackup(): void
         );
     }
 
-    /**
-     * @group mysql
-     */
     public function testLoadFixturesCheckReferences(): void
     {
         $this->markTestSkipped('This test is broken right now.');
diff --git a/tests/Test/ConfigMysqlKeepDatabaseAndSchemaTest.php b/tests/Test/ConfigMysqlKeepDatabaseAndSchemaTest.php
index e733dc83..d4e853c3 100644
--- a/tests/Test/ConfigMysqlKeepDatabaseAndSchemaTest.php
+++ b/tests/Test/ConfigMysqlKeepDatabaseAndSchemaTest.php
@@ -13,8 +13,8 @@
 
 namespace Liip\Acme\Tests\Test;
 
-use Doctrine\Common\Annotations\Annotation\IgnoreAnnotation;
 use Liip\Acme\Tests\AppConfigMysqlKeepDatabaseAndSchema\AppConfigMysqlKernelKeepDatabaseAndSchema;
+use PHPUnit\Framework\Attributes\PreserveGlobalState;
 
 /**
  * Test MySQL database with database caching enabled.
@@ -30,14 +30,9 @@
  * Tests/App/AppKernel.php.
  * So it must be loaded in a separate process.
  *
- * @runTestsInSeparateProcesses
- *
- * @preserveGlobalState disabled
- *
- * @IgnoreAnnotation("group")
- *
  * @internal
  */
+#[PreserveGlobalState(false)]
 class ConfigMysqlKeepDatabaseAndSchemaTest extends ConfigMysqlTest
 {
     protected static function getKernelClass(): string
diff --git a/tests/Test/ConfigMysqlTest.php b/tests/Test/ConfigMysqlTest.php
index f130eca9..49b56745 100644
--- a/tests/Test/ConfigMysqlTest.php
+++ b/tests/Test/ConfigMysqlTest.php
@@ -13,7 +13,6 @@
 
 namespace Liip\Acme\Tests\Test;
 
-use Doctrine\Common\Annotations\Annotation\IgnoreAnnotation;
 use Doctrine\Common\DataFixtures\Purger\ORMPurger;
 use Doctrine\Persistence\ObjectRepository;
 use Liip\Acme\Tests\App\Entity\User;
@@ -22,6 +21,7 @@
 use Liip\TestFixturesBundle\Services\DatabaseToolCollection;
 use Liip\TestFixturesBundle\Services\DatabaseTools\AbstractDatabaseTool;
 use Liip\TestFixturesBundle\Services\DatabaseTools\ORMDatabaseTool;
+use PHPUnit\Framework\Attributes\PreserveGlobalState;
 use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
 
 // BC, needed by "theofidry/alice-data-fixtures: <1.3" not compatible with "doctrine/persistence: ^2.0"
@@ -44,14 +44,9 @@ class_alias('\Doctrine\Persistence\ObjectManager', '\Doctrine\Common\Persistence
  * Tests/App/AppKernel.php.
  * So it must be loaded in a separate process.
  *
- * @runTestsInSeparateProcesses
- *
- * @preserveGlobalState disabled
- *
- * @IgnoreAnnotation("group")
- *
  * @internal
  */
+#[PreserveGlobalState(false)]
 class ConfigMysqlTest extends KernelTestCase
 {
     use ContainerProvider;
@@ -77,11 +72,6 @@ protected function setUp(): void
         $this->assertInstanceOf(ORMDatabaseTool::class, $this->databaseTool);
     }
 
-    /**
-     * Data fixtures.
-     *
-     * @group mysql
-     */
     public function testLoadEmptyFixtures(): void
     {
         $fixtures = $this->databaseTool->loadFixtures([]);
@@ -92,9 +82,6 @@ public function testLoadEmptyFixtures(): void
         );
     }
 
-    /**
-     * @group mysql
-     */
     public function testLoadFixtures(int $firstUserId = 1): void
     {
         $fixtures = $this->databaseTool->loadFixtures([
@@ -132,9 +119,6 @@ public function testLoadFixtures(int $firstUserId = 1): void
         );
     }
 
-    /**
-     * @group mysql
-     */
     public function testAppendFixtures(int $firstUserId = 1, int $thirdUserId = 3): void
     {
         $this->databaseTool->loadFixtures([
@@ -189,8 +173,6 @@ public function testAppendFixtures(int $firstUserId = 1, int $thirdUserId = 3):
      *
      * Purge modes are defined in
      * Doctrine\Common\DataFixtures\Purger\ORMPurger.
-     *
-     * @group mysql
      */
     public function testLoadFixturesAndExcludeFromPurge(): void
     {
@@ -227,8 +209,6 @@ public function testLoadFixturesAndExcludeFromPurge(): void
      *
      * Purge modes are defined in
      * Doctrine\Common\DataFixtures\Purger\ORMPurger.
-     *
-     * @group mysql
      */
     public function testLoadFixturesAndPurge(): void
     {
@@ -289,8 +269,6 @@ public function testLoadFixturesAndPurge(): void
 
     /**
      * Use nelmio/alice.
-     *
-     * @group mysql
      */
     public function testLoadFixturesFiles(): void
     {
diff --git a/tests/Test/ConfigMysqlUrlTest.php b/tests/Test/ConfigMysqlUrlTest.php
index 44daa68c..7fe89aeb 100644
--- a/tests/Test/ConfigMysqlUrlTest.php
+++ b/tests/Test/ConfigMysqlUrlTest.php
@@ -14,6 +14,7 @@
 namespace Liip\Acme\Tests\Test;
 
 use Liip\Acme\Tests\AppConfigMysqlUrl\AppConfigMysqlUrlKernel;
+use PHPUnit\Framework\Attributes\PreserveGlobalState;
 
 /**
  * Test MySQL database with a configuration by url.
@@ -29,12 +30,9 @@
  * Tests/App/AppKernel.php.
  * So it must be loaded in a separate process.
  *
- * @runTestsInSeparateProcesses
- *
- * @preserveGlobalState disabled
- *
  * @internal
  */
+#[PreserveGlobalState(false)]
 class ConfigMysqlUrlTest extends ConfigMysqlTest
 {
     protected static function getKernelClass(): string
diff --git a/tests/Test/ConfigPgsqlTest.php b/tests/Test/ConfigPgsqlTest.php
index a6b318db..90e685e0 100644
--- a/tests/Test/ConfigPgsqlTest.php
+++ b/tests/Test/ConfigPgsqlTest.php
@@ -15,6 +15,7 @@
 
 use Liip\Acme\Tests\AppConfigPgsql\AppConfigPgsqlKernel;
 use Liip\TestFixturesBundle\Services\DatabaseTools\ORMDatabaseTool;
+use PHPUnit\Framework\Attributes\PreserveGlobalState;
 
 /**
  * Test PostgreSQL database.
@@ -30,12 +31,9 @@
  * Tests/App/AppKernel.php.
  * So it must be loaded in a separate process.
  *
- * @runTestsInSeparateProcesses
- *
- * @preserveGlobalState disabled
- *
  * @internal
  */
+#[PreserveGlobalState(false)]
 class ConfigPgsqlTest extends ConfigMysqlTest
 {
     public function testToolType(): void
diff --git a/tests/Test/ConfigSqliteTest.php b/tests/Test/ConfigSqliteTest.php
index 8318a2cb..a4d0e2e7 100644
--- a/tests/Test/ConfigSqliteTest.php
+++ b/tests/Test/ConfigSqliteTest.php
@@ -19,7 +19,6 @@
     class_alias('\Doctrine\Persistence\ObjectManager', '\Doctrine\Common\Persistence\ObjectManager');
 }
 
-use Doctrine\Common\Annotations\Annotation\IgnoreAnnotation;
 use Doctrine\Common\DataFixtures\Purger\ORMPurger;
 use Doctrine\Persistence\ObjectRepository;
 use Liip\Acme\Tests\App\Entity\User;
@@ -28,18 +27,14 @@ class_alias('\Doctrine\Persistence\ObjectManager', '\Doctrine\Common\Persistence
 use Liip\TestFixturesBundle\Services\DatabaseToolCollection;
 use Liip\TestFixturesBundle\Services\DatabaseTools\AbstractDatabaseTool;
 use Liip\TestFixturesBundle\Services\DatabaseTools\ORMSqliteDatabaseTool;
+use PHPUnit\Framework\Attributes\Depends;
+use PHPUnit\Framework\Attributes\PreserveGlobalState;
 use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
 
 /**
- * @runTestsInSeparateProcesses
- *
- * @preserveGlobalState disabled
- *
- * @IgnoreAnnotation("depends")
- * @IgnoreAnnotation("expectedException")
- *
  * @internal
  */
+#[PreserveGlobalState(false)]
 class ConfigSqliteTest extends KernelTestCase
 {
     use ContainerProvider;
@@ -357,9 +352,8 @@ public function testLoadNonexistentFixturesFiles(): void
 
     /**
      * Use nelmio/alice with PURGE_MODE_TRUNCATE.
-     *
-     * @depends testLoadFixturesFiles
      */
+    #[Depends('testLoadFixturesFiles')]
     public function testLoadFixturesFilesWithPurgeModeTruncate(): void
     {
         $this->databaseTool->setPurgeMode(ORMPurger::PURGE_MODE_TRUNCATE);
diff --git a/tests/Test/ConfigSqliteUrlTest.php b/tests/Test/ConfigSqliteUrlTest.php
index 5ccd8321..f8aa5986 100644
--- a/tests/Test/ConfigSqliteUrlTest.php
+++ b/tests/Test/ConfigSqliteUrlTest.php
@@ -19,21 +19,15 @@
     class_alias('\Doctrine\Persistence\ObjectManager', '\Doctrine\Common\Persistence\ObjectManager');
 }
 
-use Doctrine\Common\Annotations\Annotation\IgnoreAnnotation;
 use Liip\Acme\Tests\AppConfigSqliteUrl\AppConfigSqliteUrlKernel;
+use PHPUnit\Framework\Attributes\PreserveGlobalState;
 
 /**
  * Run SQLite tests by using an URL for Doctrine.
  *
- * @runTestsInSeparateProcesses
- *
- * @preserveGlobalState disabled
- *
- * @IgnoreAnnotation("depends")
- * @IgnoreAnnotation("expectedException")
- *
  * @internal
  */
+#[PreserveGlobalState(false)]
 class ConfigSqliteUrlTest extends ConfigSqliteTest
 {
     public static function getKernelClass(): string
diff --git a/tests/Test/ConfigTest.php b/tests/Test/ConfigTest.php
index 45fea84b..0bf18ffb 100644
--- a/tests/Test/ConfigTest.php
+++ b/tests/Test/ConfigTest.php
@@ -13,7 +13,6 @@
 
 namespace Liip\Acme\Tests\Test;
 
-use Doctrine\Common\Annotations\Annotation\IgnoreAnnotation;
 use Doctrine\Persistence\ObjectRepository;
 use Liip\Acme\Tests\App\Entity\User;
 use Liip\Acme\Tests\AppConfig\AppConfigKernel;
@@ -22,6 +21,7 @@
 use Liip\TestFixturesBundle\Services\DatabaseToolCollection;
 use Liip\TestFixturesBundle\Services\DatabaseTools\AbstractDatabaseTool;
 use Liip\TestFixturesBundle\Services\DatabaseTools\ORMSqliteDatabaseTool;
+use PHPUnit\Framework\Attributes\PreserveGlobalState;
 use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
 
 /**
@@ -31,17 +31,9 @@
  * Tests/App/AppKernel.php.
  * So it must be loaded in a separate process.
  *
- * @runTestsInSeparateProcesses
- *
- * @preserveGlobalState disabled
- *
- * Avoid conflict with PHPUnit annotation when reading QueryCount
- * annotation:
- *
- * @IgnoreAnnotation("expectedException")
- *
  * @internal
  */
+#[PreserveGlobalState(false)]
 class ConfigTest extends KernelTestCase
 {
     use ContainerProvider;