diff --git a/Twig/Extension/UploaderExtension.php b/Twig/Extension/UploaderExtension.php
index a8664b11..a5a7c440 100644
--- a/Twig/Extension/UploaderExtension.php
+++ b/Twig/Extension/UploaderExtension.php
@@ -3,8 +3,10 @@
 namespace Oneup\UploaderBundle\Twig\Extension;
 
 use Oneup\UploaderBundle\Templating\Helper\UploaderHelper;
+use Twig\Extension\AbstractExtension;
+use Twig\TwigFunction;
 
-class UploaderExtension extends \Twig_Extension
+class UploaderExtension extends AbstractExtension
 {
     protected $helper;
 
@@ -21,11 +23,11 @@ public function getName()
     public function getFunctions()
     {
         return [
-            new \Twig_SimpleFunction('oneup_uploader_endpoint', [$this, 'endpoint']),
-            new \Twig_SimpleFunction('oneup_uploader_progress', [$this, 'progress']),
-            new \Twig_SimpleFunction('oneup_uploader_cancel', [$this, 'cancel']),
-            new \Twig_SimpleFunction('oneup_uploader_upload_key', [$this, 'uploadKey']),
-            new \Twig_SimpleFunction('oneup_uploader_maxsize', [$this, 'maxSize']),
+            new TwigFunction('oneup_uploader_endpoint', [$this, 'endpoint']),
+            new TwigFunction('oneup_uploader_progress', [$this, 'progress']),
+            new TwigFunction('oneup_uploader_cancel', [$this, 'cancel']),
+            new TwigFunction('oneup_uploader_upload_key', [$this, 'uploadKey']),
+            new TwigFunction('oneup_uploader_maxsize', [$this, 'maxSize']),
         ];
     }
 
diff --git a/composer.json b/composer.json
index 6da94639..3a90d012 100644
--- a/composer.json
+++ b/composer.json
@@ -28,7 +28,8 @@
         "symfony/http-foundation": "^3.0|^4.0",
         "symfony/templating": "^3.0|^4.0",
         "symfony/translation": "^3.0|^4.0",
-        "symfony/yaml": "^3.0|^4.0"
+        "symfony/yaml": "^3.0|^4.0",
+        "twig/twig": "^1.41|^2.10|^3.0"
     },
 
     "require-dev": {