diff --git a/DependencyInjection/KnplabsMarkdownExtension.php b/DependencyInjection/KnplabsMarkdownExtension.php
index bace09e..c6263ac 100644
--- a/DependencyInjection/KnplabsMarkdownExtension.php
+++ b/DependencyInjection/KnplabsMarkdownExtension.php
@@ -2,7 +2,7 @@
 
 namespace Knplabs\Bundle\MarkdownBundle\DependencyInjection;
 
-use Symfony\Component\DependencyInjection\Extension\Extension;
+use Symfony\Component\HttpKernel\DependencyInjection\Extension;
 use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
 use Symfony\Component\Config\FileLocator;
 use Symfony\Component\DependencyInjection\ContainerBuilder;