diff --git a/composer.json b/composer.json
index 998e612..de0f01b 100644
--- a/composer.json
+++ b/composer.json
@@ -38,12 +38,13 @@
     "symfony/http-kernel": "^6.0|^7.0",
     "symfony/lock": "^6.0|^7.0",
     "symfony/messenger": "^6.0|^7.0",
-    "symfony/monolog-bundle": ">=3.7",
+    "symfony/monolog-bundle": ">=3.9",
     "symfony/polyfill-uuid": "^1.23",
     "symfony/runtime": "^6.0|^7.0",
     "symfony/security-bundle": "^6.0|^7.0",
     "symfony/uid": "^6.0|^7.0",
     "symfony/validator": "^6.0|^7.0",
+    "symfony/var-exporter": "^6.4|^7.0",
     "symfony/yaml": "^6.0|^7.0"
   },
   "require-dev": {
diff --git a/src/DependencyInjection/AnzuSystemsCommonExtension.php b/src/DependencyInjection/AnzuSystemsCommonExtension.php
index c7da607..74eae20 100644
--- a/src/DependencyInjection/AnzuSystemsCommonExtension.php
+++ b/src/DependencyInjection/AnzuSystemsCommonExtension.php
@@ -81,6 +81,7 @@
 use AnzuSystems\CommonBundle\Serializer\Handler\Handlers\ValueObjectHandler;
 use AnzuSystems\CommonBundle\Serializer\Service\BsonConverter;
 use AnzuSystems\CommonBundle\Util\ResourceLocker;
+use AnzuSystems\CommonBundle\Validator\Constraints\UniqueEntityDtoValidator;
 use AnzuSystems\CommonBundle\Validator\Validator;
 use AnzuSystems\SerializerBundle\Metadata\MetadataRegistry;
 use AnzuSystems\SerializerBundle\Serializer;
@@ -153,20 +154,20 @@ public function prepend(ContainerBuilder $container): void
                     'id' => 'anzu_systems_common.logs.audit_log_messenger_handler',
                 ],
                 'journal_sync' => [
-                    'type' => 'mongo',
+                    'type' => 'mongodb',
                     'channels' => 'journal_sync',
                     'level' => 'debug',
-                    'mongo' => [
+                    'mongodb' => [
                         'id' => 'anzu_systems_common.logs.journal_log_client',
                         'database' => $logs['journal']['mongo']['database'],
                         'collection' => $logs['journal']['mongo']['collection'],
                     ],
                 ],
                 'audit_sync' => [
-                    'type' => 'mongo',
+                    'type' => 'mongodb',
                     'channels' => 'audit_sync',
                     'level' => 'debug',
-                    'mongo' => [
+                    'mongodb' => [
                         'id' => 'anzu_systems_common.logs.audit_log_client',
                         'database' => $logs['audit']['mongo']['database'],
                         'collection' => $logs['audit']['mongo']['collection'],
@@ -265,6 +266,10 @@ private function loadSettings(ContainerBuilder $container): void
             ->getDefinition(CurrentAnzuUserProvider::class)
             ->replaceArgument('$userEntityClass', $settings['user_entity_class']);
 
+        $container
+            ->getDefinition(UniqueEntityDtoValidator::class)
+            ->replaceArgument('$userEntityClass', $settings['user_entity_class']);
+
         if ($settings['send_context_id_with_response']) {
             $container->register(ContextIdOnResponseListener::class)
                 ->addTag('kernel.event_listener', ['event' => KernelEvents::RESPONSE])
diff --git a/src/Resources/config/services.php b/src/Resources/config/services.php
index e194e02..1b16529 100644
--- a/src/Resources/config/services.php
+++ b/src/Resources/config/services.php
@@ -162,6 +162,7 @@
     $services->set(UniqueEntityDtoValidator::class)
         ->arg('$propertyAccessor', service(PropertyAccessorInterface::class))
         ->arg('$entityManager', service(EntityManagerInterface::class))
+        ->arg('$userEntityClass', null)
         ->tag('validator.constraint_validator')
     ;
 
diff --git a/src/Validator/Constraints/UniqueEntityDtoValidator.php b/src/Validator/Constraints/UniqueEntityDtoValidator.php
index 793d920..1427021 100644
--- a/src/Validator/Constraints/UniqueEntityDtoValidator.php
+++ b/src/Validator/Constraints/UniqueEntityDtoValidator.php
@@ -4,6 +4,7 @@
 
 namespace AnzuSystems\CommonBundle\Validator\Constraints;
 
+use AnzuSystems\Contracts\Entity\AnzuUser;
 use AnzuSystems\Contracts\Entity\Interfaces\BaseIdentifiableInterface;
 use Doctrine\ORM\EntityManagerInterface;
 use Symfony\Component\PropertyAccess\PropertyAccessorInterface;
@@ -16,6 +17,7 @@ final class UniqueEntityDtoValidator extends ConstraintValidator
     public function __construct(
         private readonly PropertyAccessorInterface $propertyAccessor,
         private readonly EntityManagerInterface $entityManager,
+        private readonly string $userEntityClass,
     ) {
     }
 
@@ -31,13 +33,20 @@ public function validate(mixed $value, Constraint $constraint): void
             throw new UnexpectedTypeException($constraint->entity, BaseIdentifiableInterface::class);
         }
 
+        /** @var class-string<BaseIdentifiableInterface> $entityClass */
+        $entityClass = $constraint->entity;
+        if ($entityClass === AnzuUser::class) {
+            /** @var class-string<BaseIdentifiableInterface> $entityClass */
+            $entityClass = $this->userEntityClass;
+        }
+
         $fieldsNames = $constraint->fields;
         $fields = [];
         foreach ($fieldsNames as $fieldName) {
             $fields[$fieldName] = $this->propertyAccessor->getValue($value, $fieldName);
         }
         /** @var BaseIdentifiableInterface|null $existingEntity */
-        $existingEntity = $this->entityManager->getRepository($constraint->entity)->findOneBy($fields);
+        $existingEntity = $this->entityManager->getRepository($entityClass)->findOneBy($fields);
         if (null === $existingEntity) {
             return;
         }