diff --git a/src/Kernel.php b/src/Kernel.php
index 5e7ccff0261..a5f95018387 100644
--- a/src/Kernel.php
+++ b/src/Kernel.php
@@ -14,12 +14,23 @@
 use ProxyManager\Proxy\VirtualProxyInterface;
 use PSS\SymfonyMockerContainer\DependencyInjection\MockerContainer;
 use Symfony\Bundle\FrameworkBundle\Kernel\MicroKernelTrait;
+use Symfony\Component\Config\Loader\DelegatingLoader;
 use Symfony\Component\Config\Loader\LoaderInterface;
+use Symfony\Component\Config\Loader\LoaderResolver;
 use Symfony\Component\Config\Resource\FileResource;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\DependencyInjection\Loader\ClosureLoader;
+use Symfony\Component\DependencyInjection\Loader\DirectoryLoader;
+use Symfony\Component\DependencyInjection\Loader\GlobFileLoader;
+use Symfony\Component\DependencyInjection\Loader\IniFileLoader;
+use Symfony\Component\DependencyInjection\Loader\PhpFileLoader;
+use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
+use Symfony\Component\DependencyInjection\Loader\YamlFileLoader;
+use Symfony\Component\HttpKernel\Config\FileLocator;
 use Symfony\Component\HttpKernel\Kernel as BaseKernel;
 use Symfony\Component\Routing\RouteCollectionBuilder;
+use Webmozart\Assert\Assert;
 
 /** @final */
 class Kernel extends BaseKernel
@@ -104,6 +115,25 @@ protected function getContainerBaseClass(): string
         return parent::getContainerBaseClass();
     }
 
+    protected function getContainerLoader(ContainerInterface $container): LoaderInterface
+    {
+        /** @var ContainerBuilder $container */
+        Assert::isInstanceOf($container, ContainerBuilder::class);
+
+        $locator = new FileLocator($this, $this->getRootDir() . '/Resources');
+        $resolver = new LoaderResolver(array(
+            new XmlFileLoader($container, $locator),
+            new YamlFileLoader($container, $locator),
+            new IniFileLoader($container, $locator),
+            new PhpFileLoader($container, $locator),
+            new GlobFileLoader($container, $locator),
+            new DirectoryLoader($container, $locator),
+            new ClosureLoader($container),
+        ));
+
+        return new DelegatingLoader($resolver);
+    }
+
     private function isTestEnvironment(): bool
     {
         return 0 === strpos($this->getEnvironment(), 'test');