diff --git a/tests/Unit/Aggregate/UuidTest.php b/tests/Unit/Aggregate/UuidTest.php
index cbeaa9497..20c623076 100644
--- a/tests/Unit/Aggregate/UuidTest.php
+++ b/tests/Unit/Aggregate/UuidTest.php
@@ -7,6 +7,7 @@
 use DateTimeInterface;
 use Patchlevel\EventSourcing\Aggregate\Uuid;
 use PHPUnit\Framework\TestCase;
+use Ramsey\Uuid\Type\Hexadecimal;
 use Ramsey\Uuid\Uuid as RamseyUuid;
 use Ramsey\Uuid\UuidFactory;
 use Ramsey\Uuid\UuidInterface;
@@ -25,7 +26,7 @@ public function testV6(): void
     {
         $factory = new class extends UuidFactory
         {
-            public function uuid6($node = null, int|null $clockSeq = null): UuidInterface
+            public function uuid6(?Hexadecimal $node = null, ?int $clockSeq = null): UuidInterface
             {
                 return RamseyUuid::fromString('1eec1e5c-e397-6644-9aed-0242ac110002');
             }