diff --git a/.cache/.gitignore b/.cache/.gitignore
new file mode 100644
index 0000000..a152386
--- /dev/null
+++ b/.cache/.gitignore
@@ -0,0 +1 @@
+CompiledContainer.php
diff --git a/src/Messenger/Kernel/MessengerServiceFactory.php b/src/Messenger/Kernel/MessengerServiceFactory.php
index 7c04688..1e73435 100644
--- a/src/Messenger/Kernel/MessengerServiceFactory.php
+++ b/src/Messenger/Kernel/MessengerServiceFactory.php
@@ -64,7 +64,7 @@ public function __invoke(ServicesBuilder $builder): iterable {
         // endregion
 
         // region utilities
-        yield CommandBusDependencies::Serializer->value => factory(Serializer::create(...));
+        yield CommandBusDependencies::Serializer->value => factory(fn () => Serializer::create());
         yield SerializerInterface::class => get(CommandBusDependencies::Serializer->value);
         yield CommandBusDependencies::EventDispatcher->value => $this->eventDispatcher ?? new EventDispatcher();
         yield CommandBusDependencies::Logger->value => $this->logger ?? new NullLogger();
diff --git a/tests/Messenger/MessengerTest.php b/tests/Messenger/MessengerTest.php
index 3fcf067..8507020 100644
--- a/tests/Messenger/MessengerTest.php
+++ b/tests/Messenger/MessengerTest.php
@@ -17,12 +17,19 @@
 use WonderNetwork\SlimKernel\Messenger\Kernel\TransportLocatorBuilder;
 
 final class MessengerTest extends TestCase {
+    protected function setUp(): void {
+        if (file_exists($filename = __DIR__.'/../../.cache/CompiledContainer.php')) {
+            unlink($filename);
+        }
+    }
+
     public function testMessenger(): void {
         $transportName = 'in-memory';
 
         $root = realpath(__DIR__.'/../Resources/Messenger')
             ?: throw new RuntimeException('Oops');
         $container = KernelBuilder::start($root)
+            ->useCache(__DIR__.'/../../.cache/')
             ->register(
                 new MessengerServiceFactory(
                     commandPath: 'src/*AsyncHandler.php',