diff --git a/backend/tests/Unit/Auth/UseCases/CreateSessionTest.php b/backend/tests/Unit/Auth/UseCases/CreateSessionTest.php
index d6368f2..0367f1c 100644
--- a/backend/tests/Unit/Auth/UseCases/CreateSessionTest.php
+++ b/backend/tests/Unit/Auth/UseCases/CreateSessionTest.php
@@ -6,10 +6,11 @@ use App\Auth\Clock;
 use App\Auth\UseCases\CreateSession\CreateSession;
 use App\Shared\ValueObject\EmailAddress;
 use App\User\User;
-use PHPUnit\Framework\TestCase;
+use DateTimeImmutable;
 use Tests\Fakes\FakeClock;
 use Tests\Fakes\FakeSessionRepository;
 use Tests\Fakes\FakeTokenGenerator;
+use Tests\TestCase;
 
 class CreateSessionTest extends TestCase
 {
@@ -22,9 +23,15 @@ class CreateSessionTest extends TestCase
     {
         $this->sessionRepo = new FakeSessionRepository();
         $this->tokenGenerator = new FakeTokenGenerator();
-        $this->clock = new FakeClock();
+        $this->clock = new FakeClock(
+            new DateTimeImmutable('2026-05-18 12:00:00')
+        );
 
-        $this->createSession = new CreateSession($this->sessionRepo, $this->tokenGenerator, $this->clock);
+        $this->createSession = new CreateSession(
+            $this->sessionRepo,
+            $this->tokenGenerator,
+            $this->clock
+        );
     }
 
     public function testCreatesSessionForUser(): void