diff --git a/composer.json b/composer.json
index aa97d9f..dab45fe 100755
--- a/composer.json
+++ b/composer.json
@@ -19,8 +19,8 @@
 
     "require": {
         "php": ">=5.5.9",
-        "symfony/form": "^2.7|^3.0|^4.0",
-        "symfony/validator": "^2.7|^3.0|^4.0"
+        "symfony/form": "^2.7|^3.0|^4.0|^5.0",
+        "symfony/validator": "^2.7|^3.0|^4.0|^5.0"
     },
     "require-dev": {
         "php": "^7.1.3",
diff --git a/src/Factory/JsFormValidatorFactory.php b/src/Factory/JsFormValidatorFactory.php
index 79c78d8..e2ddefa 100755
--- a/src/Factory/JsFormValidatorFactory.php
+++ b/src/Factory/JsFormValidatorFactory.php
@@ -11,7 +11,7 @@
 use Symfony\Component\Form\Extension\Core\Type\HiddenType;
 use Symfony\Component\Form\Form;
 use Symfony\Component\Form\FormInterface;
-use Symfony\Component\Translation\TranslatorInterface;
+use Symfony\Contracts\Translation\TranslatorInterface;
 use Symfony\Component\Validator\Constraint;
 use Symfony\Component\Validator\Mapping\ClassMetadata;
 use Symfony\Component\Validator\Mapping\GetterMetadata;
diff --git a/src/Form/Extension/FormExtension.php b/src/Form/Extension/FormExtension.php
index 11bd771..8c846d1 100755
--- a/src/Form/Extension/FormExtension.php
+++ b/src/Form/Extension/FormExtension.php
@@ -58,7 +58,7 @@ public function getExtendedType()
     /**
      * {@inheritDoc}
      */
-    public static function getExtendedTypes()
+    public static function getExtendedTypes(): iterable
     {
         yield FormType::class;
     }
diff --git a/src/Twig/Extension/JsFormValidatorTwigExtension.php b/src/Twig/Extension/JsFormValidatorTwigExtension.php
index a1f16fa..9929ca4 100755
--- a/src/Twig/Extension/JsFormValidatorTwigExtension.php
+++ b/src/Twig/Extension/JsFormValidatorTwigExtension.php
@@ -4,13 +4,15 @@
 
 use Fp\JsFormValidatorBundle\Factory\JsFormValidatorFactory;
 use Symfony\Component\Form\FormView;
+use Twig\Extension\AbstractExtension;
+use Twig\TwigFunction;
 
 /**
  * Class JsFormValidatorTwigExtension
  *
  * @package Fp\JsFormValidatorBundle\Twig\Extension
  */
-class JsFormValidatorTwigExtension extends \Twig_Extension
+class JsFormValidatorTwigExtension extends AbstractExtension
 {
     /**
      * @var JsFormValidatorFactory
@@ -42,10 +44,10 @@ public function __construct(JsFormValidatorFactory $factory)
     public function getFunctions()
     {
         return array(
-            new \Twig_SimpleFunction('init_js_validation', array($this, 'getJsValidator'), array(
+            new TwigFunction('init_js_validation', array($this, 'getJsValidator'), array(
                 'is_safe' => array('html')
             )),
-            new \Twig_SimpleFunction('js_validator_config', array($this, 'getConfig'), array(
+            new TwigFunction('js_validator_config', array($this, 'getConfig'), array(
                 'is_safe' => array('html')
             )),
         );