diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index c633565..15ea900 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -6,9 +6,6 @@ on:
             - master
     pull_request:
 
-env:
-    SYMFONY_DEPRECATIONS_HELPER: weak
-
 jobs:
     PHPUnit:
 
diff --git a/.gitignore b/.gitignore
index d22d043..c20d882 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+tests/Fixtures/var
 vendor/
 composer.lock
 phpunit.xml$
diff --git a/composer.json b/composer.json
index a51ead7..83a5781 100644
--- a/composer.json
+++ b/composer.json
@@ -32,14 +32,18 @@
         "symfony/dependency-injection": "^5.4|^6.4|^7.0",
         "symfony/deprecation-contracts": "^2.0|^3.0",
         "symfony/event-dispatcher": "^5.4|^6.4|^7.0",
+        "symfony/framework-bundle": "^5.4|^6.4",
         "symfony/http-kernel": "^5.4|^6.4|^7.0"
     },
 
     "require-dev": {
-        "phpunit/phpunit": "^8.5.36|^9.6",
+        "doctrine/common": "^2.0|^3.1",
+        "doctrine/doctrine-bundle": "^2.0",
+        "phpunit/phpunit": "^9.6.18",
         "symfony/error-handler": "^5.4|^6.4|^7.0",
         "symfony/phpunit-bridge": ">= 7.0",
-        "webfactory/doctrine-orm-test-infrastructure": "^1.9"
+        "symfony/yaml": "^5.4|^6.4|^7.0",
+        "webfactory/doctrine-orm-test-infrastructure": "^1.14"
     },
 
     "config": {
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 3883f00..84f0a22 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/8.5/phpunit.xsd"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.6/phpunit.xsd"
          bootstrap="vendor/autoload.php"
          colors="true">
 
@@ -9,17 +9,13 @@
             <directory>tests</directory>
         </testsuite>
     </testsuites>
-
-    <!-- Filter for code coverage -->
-    <filter>
-        <whitelist processUncoveredFilesFromWhitelist="true">
-            <directory suffix=".php">src</directory>
-            <exclude>
-                <directory>src/Resources</directory>
-            </exclude>
-        </whitelist>
-    </filter>
-
+    <php>
+        <server name="KERNEL_CLASS" value="Webfactory\Bundle\PolyglotBundle\Tests\Fixtures\TestKernel" />
+        <server name="KERNEL_DIR" value="tests/Fixtures/" />
+        <env name="SYMFONY_DEPRECATIONS_HELPER" value="weak" />
+        <env name="DOCTRINE_DEPRECATIONS" value="trigger" />
+        <server name="SHELL_VERBOSITY" value="-1" />
+    </php>
     <listeners>
         <listener class="Symfony\Bridge\PhpUnit\SymfonyTestsListener" />
     </listeners>
diff --git a/src/WebfactoryPolyglotBundle.php b/src/WebfactoryPolyglotBundle.php
index 1e7da45..a35ebed 100644
--- a/src/WebfactoryPolyglotBundle.php
+++ b/src/WebfactoryPolyglotBundle.php
@@ -15,7 +15,7 @@
 
 final class WebfactoryPolyglotBundle extends Bundle
 {
-    public function build(ContainerBuilder $container)
+    public function build(ContainerBuilder $container): void
     {
         $container->addCompilerPass(new RegisterDoctrineTypePass());
     }
diff --git a/tests/Doctrine/PersistentTranslatableTest.php b/tests/Doctrine/PersistentTranslatableTest.php
index 04192c3..c445c2a 100644
--- a/tests/Doctrine/PersistentTranslatableTest.php
+++ b/tests/Doctrine/PersistentTranslatableTest.php
@@ -12,8 +12,8 @@
 use Symfony\Component\ErrorHandler\BufferingLogger;
 use Webfactory\Bundle\PolyglotBundle\Doctrine\PersistentTranslatable;
 use Webfactory\Bundle\PolyglotBundle\Locale\DefaultLocaleProvider;
-use Webfactory\Bundle\PolyglotBundle\Tests\TestEntity;
-use Webfactory\Bundle\PolyglotBundle\Tests\TestEntityTranslation;
+use Webfactory\Bundle\PolyglotBundle\Tests\Fixtures\Entity\TestEntity;
+use Webfactory\Bundle\PolyglotBundle\Tests\Fixtures\Entity\TestEntityTranslation;
 
 class PersistentTranslatableTest extends TestCase
 {
diff --git a/tests/Doctrine/TranslatableClassMetadataTest.php b/tests/Doctrine/TranslatableClassMetadataTest.php
index d32f876..27beea9 100644
--- a/tests/Doctrine/TranslatableClassMetadataTest.php
+++ b/tests/Doctrine/TranslatableClassMetadataTest.php
@@ -5,8 +5,8 @@
 use Doctrine\Common\Annotations\AnnotationReader;
 use PHPUnit\Framework\TestCase;
 use Webfactory\Bundle\PolyglotBundle\Doctrine\TranslatableClassMetadata;
-use Webfactory\Bundle\PolyglotBundle\Tests\TestEntity;
-use Webfactory\Bundle\PolyglotBundle\Tests\TestEntityTranslation;
+use Webfactory\Bundle\PolyglotBundle\Tests\Fixtures\Entity\TestEntity;
+use Webfactory\Bundle\PolyglotBundle\Tests\Fixtures\Entity\TestEntityTranslation;
 use Webfactory\Doctrine\ORMTestInfrastructure\ORMInfrastructure;
 
 class TranslatableClassMetadataTest extends TestCase
diff --git a/tests/TestEntity.php b/tests/Fixtures/Entity/TestEntity.php
similarity index 96%
rename from tests/TestEntity.php
rename to tests/Fixtures/Entity/TestEntity.php
index e0157c7..135b145 100644
--- a/tests/TestEntity.php
+++ b/tests/Fixtures/Entity/TestEntity.php
@@ -7,7 +7,7 @@
  * file that was distributed with this source code.
  */
 
-namespace Webfactory\Bundle\PolyglotBundle\Tests;
+namespace Webfactory\Bundle\PolyglotBundle\Tests\Fixtures\Entity;
 
 use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\ORM\Mapping as ORM;
diff --git a/tests/TestEntityTranslation.php b/tests/Fixtures/Entity/TestEntityTranslation.php
similarity index 94%
rename from tests/TestEntityTranslation.php
rename to tests/Fixtures/Entity/TestEntityTranslation.php
index dccac9b..8923924 100644
--- a/tests/TestEntityTranslation.php
+++ b/tests/Fixtures/Entity/TestEntityTranslation.php
@@ -7,7 +7,7 @@
  * file that was distributed with this source code.
  */
 
-namespace Webfactory\Bundle\PolyglotBundle\Tests;
+namespace Webfactory\Bundle\PolyglotBundle\Tests\Fixtures\Entity;
 
 use Doctrine\ORM\Mapping as ORM;
 use Webfactory\Bundle\PolyglotBundle\Entity\BaseTranslation;
diff --git a/tests/Fixtures/TestKernel.php b/tests/Fixtures/TestKernel.php
new file mode 100644
index 0000000..11a99a7
--- /dev/null
+++ b/tests/Fixtures/TestKernel.php
@@ -0,0 +1,28 @@
+<?php
+
+namespace Webfactory\Bundle\PolyglotBundle\Tests\Fixtures;
+
+use Symfony\Component\Config\Loader\LoaderInterface;
+use Symfony\Component\HttpKernel\Kernel;
+
+class TestKernel extends Kernel
+{
+    public function registerBundles(): iterable
+    {
+        return [
+            new \Symfony\Bundle\FrameworkBundle\FrameworkBundle(),
+            new \Doctrine\Bundle\DoctrineBundle\DoctrineBundle(),
+            new \Webfactory\Bundle\PolyglotBundle\WebfactoryPolyglotBundle(),
+        ];
+    }
+
+    public function registerContainerConfiguration(LoaderInterface $loader): void
+    {
+        $loader->load(__DIR__.'/config/config.yml');
+    }
+
+    public function getProjectDir(): string
+    {
+        return __DIR__;
+    }
+}
diff --git a/tests/Fixtures/config/config.yml b/tests/Fixtures/config/config.yml
new file mode 100644
index 0000000..1e0abc0
--- /dev/null
+++ b/tests/Fixtures/config/config.yml
@@ -0,0 +1,18 @@
+framework:
+    test: true
+
+doctrine:
+    dbal:
+        driver: pdo_sqlite
+        memory: true
+    orm:
+        # The following would silence Doctrine bundle deprecation messages, but it's not straightforward
+        # to do while still being compliant across a range of ORM / DoctrineBundle versions.
+        #report_fields_where_declared: true
+        #enable_lazy_ghost_objects: true
+        mappings:
+            WebfactoryPolyglotBundle:
+                type: annotation
+                dir: ../tests/Fixtures/Entity
+                prefix: Webfactory\Bundle\PolyglotBundle\Tests\Fixtures\Entity
+
diff --git a/tests/Functional/IntegrationTest.php b/tests/Functional/IntegrationTest.php
index 5a36eba..3a29ae4 100644
--- a/tests/Functional/IntegrationTest.php
+++ b/tests/Functional/IntegrationTest.php
@@ -2,8 +2,8 @@
 
 namespace Webfactory\Bundle\PolyglotBundle\Tests\Functional;
 
-use Webfactory\Bundle\PolyglotBundle\Tests\TestEntity;
-use Webfactory\Bundle\PolyglotBundle\Tests\TestEntityTranslation;
+use Webfactory\Bundle\PolyglotBundle\Tests\Fixtures\Entity\TestEntity;
+use Webfactory\Bundle\PolyglotBundle\Tests\Fixtures\Entity\TestEntityTranslation;
 use Webfactory\Bundle\PolyglotBundle\Translatable;
 use Webfactory\Bundle\PolyglotBundle\TranslatableInterface;
 
diff --git a/tests/Functional/SymfonyIntegrationTest.php b/tests/Functional/SymfonyIntegrationTest.php
new file mode 100644
index 0000000..f64fb9e
--- /dev/null
+++ b/tests/Functional/SymfonyIntegrationTest.php
@@ -0,0 +1,44 @@
+<?php
+
+namespace Webfactory\Bundle\PolyglotBundle\Tests\Functional;
+
+use Doctrine\ORM\EntityManagerInterface;
+use Doctrine\ORM\Tools\SchemaTool;
+use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
+use Webfactory\Bundle\PolyglotBundle\Tests\Fixtures\Entity\TestEntity;
+use Webfactory\Bundle\PolyglotBundle\Tests\Fixtures\Entity\TestEntityTranslation;
+use Webfactory\Bundle\PolyglotBundle\Translatable;
+
+class SymfonyIntegrationTest extends KernelTestCase
+{
+    /**
+     * @test
+     */
+    public function persist_and_reload_entity_in_Symfony(): void
+    {
+        self::bootKernel();
+        $container = static::getContainer();
+
+        /** @var EntityManagerInterface $entityManager */
+        $entityManager = $container->get('doctrine.orm.entity_manager');
+
+        $schemaTool = new SchemaTool($entityManager);
+        $schemaTool->createSchema([
+            $entityManager->getClassMetadata(TestEntity::class),
+            $entityManager->getClassMetadata(TestEntityTranslation::class),
+        ]);
+
+        $value = new Translatable('english', 'en_GB');
+        $value->setTranslation('deutsch', 'de_DE');
+        $entity = new TestEntity($value);
+
+        $entityManager->persist($entity);
+        $entityManager->flush();
+        $entityManager->clear();
+
+        $reloadedEntity = $entityManager->find(TestEntity::class, $entity->getId());
+
+        self::assertSame('english', $reloadedEntity->getText()->translate('en_GB'));
+        self::assertSame('deutsch', $reloadedEntity->getText()->translate('de_DE'));
+    }
+}