diff --git a/src/DependencyInjection/AwsExtension.php b/src/DependencyInjection/AwsExtension.php
index c51ac76..144a19a 100644
--- a/src/DependencyInjection/AwsExtension.php
+++ b/src/DependencyInjection/AwsExtension.php
@@ -9,7 +9,7 @@
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Definition;
 use Symfony\Component\DependencyInjection\Extension\Extension;
-use Symfony\Component\DependencyInjection\Loader\YamlFileLoader;
+use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
 use Symfony\Component\DependencyInjection\Reference;
 use Symfony\Component\HttpKernel\Kernel;
 
@@ -17,11 +17,11 @@ class AwsExtension extends Extension
 {
     public function load(array $configs, ContainerBuilder $container)
     {
-        $loader = new YamlFileLoader(
+        $loader = new XmlFileLoader(
             $container,
             new FileLocator(__DIR__ . '/../Resources/config')
         );
-        $loader->load('services.yml');
+        $loader->load('services.xml');
 
         $configuration = new Configuration();
         $config = $this->processConfiguration($configuration, $configs);
diff --git a/src/Resources/config/services.xml b/src/Resources/config/services.xml
new file mode 100644
index 0000000..b45be31
--- /dev/null
+++ b/src/Resources/config/services.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" ?>
+
+<container xmlns="http://symfony.com/schema/dic/services"
+           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+           xsi:schemaLocation="http://symfony.com/schema/dic/services https://symfony.com/schema/dic/services/services-1.0.xsd">
+
+    <parameters>
+        <parameter key="aws_sdk.class">Aws\Sdk</parameter>
+    </parameters>
+
+    <services>
+        <service id="aws_sdk" class="%aws_sdk.class%">
+            <argument/>
+        </service>
+    </services>
+</container>
diff --git a/src/Resources/config/services.yml b/src/Resources/config/services.yml
deleted file mode 100644
index 3fc50ba..0000000
--- a/src/Resources/config/services.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-parameters:
-    aws_sdk.class: Aws\Sdk
-
-services:
-    aws_sdk:
-        class: "%aws_sdk.class%"
-        arguments:
-            - ~