diff --git a/tests/Feature/Api/V1/AttendanceTracking/AttendanceTrackingControllerTest.php b/tests/Feature/Api/V1/AttendanceTracking/AttendanceTrackingControllerTest.php
index 92969735..37e92e9b 100644
--- a/tests/Feature/Api/V1/AttendanceTracking/AttendanceTrackingControllerTest.php
+++ b/tests/Feature/Api/V1/AttendanceTracking/AttendanceTrackingControllerTest.php
@@ -2,6 +2,7 @@
 
 namespace Tests\Feature\Api\V1\AttendanceTracking;
 
+use App\Services\AttendanceTracking\AttendanceMailerService;
 use App\Services\AttendanceTracking\AttendanceTrackingService;
 use Mockery;
 use Mockery\MockInterface;
@@ -15,6 +16,19 @@ class AttendanceTrackingControllerTest extends TestCase
         parent::tearDown();
     }
 
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        // Bind the AttendanceMailerService interface to a mock so the
+        // controller can be instantiated during route middleware gathering
+        // even when the full service chain is not mocked.
+        $this->app->instance(
+            AttendanceMailerService::class,
+            Mockery::mock(AttendanceMailerService::class)
+        );
+    }
+
     protected function mockService(): MockInterface
     {
         $service = Mockery::mock(AttendanceTrackingService::class);