diff --git a/src/Templating/TwigEngine.php b/src/Templating/TwigEngine.php
index 8c66185..24ba484 100644
--- a/src/Templating/TwigEngine.php
+++ b/src/Templating/TwigEngine.php
@@ -4,6 +4,8 @@
 
 use Pyrite\Container\Container;
 use Pyrite\Templating\Twig\Extension;
+use Symfony\Bridge\Twig\Extension\DumpExtension;
+use Symfony\Component\VarDumper\Cloner\VarCloner;
 
 class TwigEngine implements Engine
 {
@@ -13,12 +15,17 @@ public function __construct(Container $container)
     {
         $rootDir        = $container->getParameter('root_dir');
         $productionMode = $container->getParameter('production_mode');
+        $debug = !$productionMode;
 
         $loader = new \Twig_Loader_Filesystem($rootDir);
         $this->twig = new \Twig_Environment($loader, array(
             'cache' => $rootDir . '/tmp',
-            'debug' => !($productionMode === true)
+            'debug' => $debug
         ));
+
+        if ($debug && class_exists(VarCloner::class) && class_exists(DumpExtension::class)) {
+            $this->twig->addExtension(new DumpExtension(new VarCloner()));
+        }
     }
 
     public function extendTwig(Extension $extension)