diff --git a/.travis.yml b/.travis.yml
index 14e697f..e786723 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,6 @@ dist: trusty
 sudo: false
 
 php:
-    - 7.2
     - 7.3
 
 cache:
diff --git a/README.md b/README.md
index 38fab7c..ef2183d 100644
--- a/README.md
+++ b/README.md
@@ -69,13 +69,15 @@ $ composer install
 $ cd tests/Application
 $ yarn install
 $ yarn run gulp
+$ yarn build
 $ bin/console assets:install -e test
 $ bin/console doctrine:database:create -e test
 $ bin/console doctrine:schema:create -e test
 $ bin/console server:run 127.0.0.1:8080 -e test
 $ open http://localhost:8080
-$ bin/behat
-$ bin/phpspec run
+$ cd ../..
+$ vendor/bin/behat
+$ vendor/bin/phpspec run
 ```
 
 ## Contribution
diff --git a/composer.json b/composer.json
index 9680a94..3547711 100644
--- a/composer.json
+++ b/composer.json
@@ -5,34 +5,34 @@
     "description": "Przelewy24 payment plugin for Sylius applications.",
     "license": "MIT",
     "require": {
-        "php": "^7.2",
-
-        "sylius/sylius": "^1.6"
+        "php": "^7.3",
+        "sylius/sylius": "^1.7"
     },
     "require-dev": {
-        "behat/behat": "^3.4",
-        "behat/mink": "^1.7@dev",
-        "behat/mink-browserkit-driver": "^1.3",
-        "behat/mink-extension": "^2.2",
+        "behat/behat": "^3.6.1",
         "behat/mink-selenium2-driver": "^1.3",
+        "friends-of-behat/mink": "^1.8",
+        "friends-of-behat/mink-browserkit-driver": "^1.4",
+        "friends-of-behat/mink-extension": "^2.4",
         "friends-of-behat/page-object-extension": "^0.3",
         "friends-of-behat/suite-settings-extension": "^1.0",
         "friends-of-behat/symfony-extension": "^2.0",
         "friends-of-behat/variadic-extension": "^1.1",
         "lakion/mink-debug-extension": "^1.2.3",
-        "phpspec/phpspec": "^5.0",
-        "phpstan/phpstan-doctrine": "^0.10",
-        "phpstan/phpstan-shim": "^0.10",
-        "phpstan/phpstan-symfony": "^0.10",
-        "phpstan/phpstan-webmozart-assert": "^0.10",
-        "sensiolabs/security-checker": "^5.0",
-        "sylius-labs/coding-standard": "^2.0",
-        "symfony/browser-kit": "^3.4|^4.1",
-        "symfony/debug-bundle": "^3.4|^4.1",
-        "symfony/dotenv": "^4.2",
-        "symfony/intl": "^3.4|^4.1",
-        "symfony/web-profiler-bundle": "^3.4|^4.1",
-        "symfony/web-server-bundle": "^3.4|^4.1"
+        "phpspec/phpspec": "^6.0",
+        "phpstan/phpstan-doctrine": "^0.12",
+        "phpstan/phpstan-shim": "^0.12",
+        "phpstan/phpstan-symfony": "^0.12",
+        "phpstan/phpstan-webmozart-assert": "^0.12",
+        "phpunit/phpunit": "^7.0",
+        "sensiolabs/security-checker": "^6.0",
+        "sylius-labs/coding-standard": "^3.0",
+        "symfony/browser-kit": "^4.4",
+        "symfony/debug-bundle": "^4.4",
+        "symfony/intl": "^4.4",
+        "symfony/web-profiler-bundle": "^4.4",
+        "symfony/web-server-bundle": "^4.4",
+        "symfony/dotenv": "^4.4"
     },
     "conflict": {
         "symfony/symfony": "4.1.8",
diff --git a/src/Bridge/Przelewy24BridgeInterface.php b/src/Bridge/Przelewy24BridgeInterface.php
index 430c86e..309e093 100644
--- a/src/Bridge/Przelewy24BridgeInterface.php
+++ b/src/Bridge/Przelewy24BridgeInterface.php
@@ -14,15 +14,23 @@
 
 interface Przelewy24BridgeInterface
 {
-    const SANDBOX_ENVIRONMENT = 'sandbox';
-    const PRODUCTION_ENVIRONMENT = 'production';
-    const SANDBOX_HOST = 'https://sandbox.przelewy24.pl/';
-    const PRODUCTION_HOST = 'https://secure.przelewy24.pl/';
-    const P24_API_VERSION = '3.2';
-    const COMPLETED_STATUS = 'completed';
-    const FAILED_STATUS = 'failed';
-    const CANCELLED_STATUS = 'cancelled';
-    const CREATED_STATUS = 'created';
+    public const SANDBOX_ENVIRONMENT = 'sandbox';
+
+    public const PRODUCTION_ENVIRONMENT = 'production';
+
+    public const SANDBOX_HOST = 'https://sandbox.przelewy24.pl/';
+
+    public const PRODUCTION_HOST = 'https://secure.przelewy24.pl/';
+
+    public const P24_API_VERSION = '3.2';
+
+    public const COMPLETED_STATUS = 'completed';
+
+    public const FAILED_STATUS = 'failed';
+
+    public const CANCELLED_STATUS = 'cancelled';
+
+    public const CREATED_STATUS = 'created';
 
     public function getTrnRegisterUrl(): string;
 
diff --git a/tests/Application/Kernel.php b/tests/Application/Kernel.php
old mode 100755
new mode 100644
index 3145140..56fecdf
--- a/tests/Application/Kernel.php
+++ b/tests/Application/Kernel.php
@@ -86,7 +86,7 @@ protected function getContainerLoader(ContainerInterface $container): LoaderInte
         Assert::isInstanceOf($container, ContainerBuilder::class);
 
         $locator = new FileLocator($this, $this->getRootDir() . '/Resources');
-        $resolver = new LoaderResolver(array(
+        $resolver = new LoaderResolver([
             new XmlFileLoader($container, $locator),
             new YamlFileLoader($container, $locator),
             new IniFileLoader($container, $locator),
@@ -94,7 +94,7 @@ protected function getContainerLoader(ContainerInterface $container): LoaderInte
             new GlobFileLoader($container, $locator),
             new DirectoryLoader($container, $locator),
             new ClosureLoader($container),
-        ));
+        ]);
 
         return new DelegatingLoader($resolver);
     }
diff --git a/tests/Application/config/bootstrap.php b/tests/Application/config/bootstrap.php
old mode 100755
new mode 100644
index 6bb0207..2291ab4
--- a/tests/Application/config/bootstrap.php
+++ b/tests/Application/config/bootstrap.php
@@ -1,21 +1,23 @@
 <?php
 
+declare(strict_types=1);
+
 use Symfony\Component\Dotenv\Dotenv;
 
-require dirname(__DIR__).'../../../vendor/autoload.php';
+require dirname(__DIR__) . '../../../vendor/autoload.php';
 
 // Load cached env vars if the .env.local.php file exists
 // Run "composer dump-env prod" to create it (requires symfony/flex >=1.2)
-if (is_array($env = @include dirname(__DIR__).'/.env.local.php')) {
+if (is_array($env = @include dirname(__DIR__) . '/.env.local.php')) {
     $_SERVER += $env;
     $_ENV += $env;
 } elseif (!class_exists(Dotenv::class)) {
     throw new RuntimeException('Please run "composer require symfony/dotenv" to load the ".env" files configuring the application.');
 } else {
     // load all the .env files
-    (new Dotenv())->loadEnv(dirname(__DIR__).'/.env');
+    (new Dotenv())->loadEnv(dirname(__DIR__) . '/.env');
 }
 
 $_SERVER['APP_ENV'] = $_ENV['APP_ENV'] = ($_SERVER['APP_ENV'] ?? $_ENV['APP_ENV'] ?? null) ?: 'dev';
 $_SERVER['APP_DEBUG'] = $_SERVER['APP_DEBUG'] ?? $_ENV['APP_DEBUG'] ?? 'prod' !== $_SERVER['APP_ENV'];
-$_SERVER['APP_DEBUG'] = $_ENV['APP_DEBUG'] = (int) $_SERVER['APP_DEBUG'] || filter_var($_SERVER['APP_DEBUG'], FILTER_VALIDATE_BOOLEAN) ? '1' : '0';
+$_SERVER['APP_DEBUG'] = $_ENV['APP_DEBUG'] = (int) $_SERVER['APP_DEBUG'] || filter_var($_SERVER['APP_DEBUG'], \FILTER_VALIDATE_BOOLEAN) ? '1' : '0';
diff --git a/tests/Application/config/bundles.php b/tests/Application/config/bundles.php
old mode 100755
new mode 100644
index 5fac6dc..d0a7190
--- a/tests/Application/config/bundles.php
+++ b/tests/Application/config/bundles.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 return [
     Symfony\Bundle\FrameworkBundle\FrameworkBundle::class => ['all' => true],
     Symfony\Bundle\MonologBundle\MonologBundle::class => ['all' => true],
@@ -31,9 +33,7 @@
     Sylius\Bundle\ResourceBundle\SyliusResourceBundle::class => ['all' => true],
     Sylius\Bundle\GridBundle\SyliusGridBundle::class => ['all' => true],
     winzou\Bundle\StateMachineBundle\winzouStateMachineBundle::class => ['all' => true],
-    Sonata\CoreBundle\SonataCoreBundle::class => ['all' => true],
     Sonata\BlockBundle\SonataBlockBundle::class => ['all' => true],
-    Sonata\IntlBundle\SonataIntlBundle::class => ['all' => true],
     Bazinga\Bundle\HateoasBundle\BazingaHateoasBundle::class => ['all' => true],
     JMS\SerializerBundle\JMSSerializerBundle::class => ['all' => true],
     FOS\RestBundle\FOSRestBundle::class => ['all' => true],
@@ -44,7 +44,6 @@
     Stof\DoctrineExtensionsBundle\StofDoctrineExtensionsBundle::class => ['all' => true],
     WhiteOctober\PagerfantaBundle\WhiteOctoberPagerfantaBundle::class => ['all' => true],
     Doctrine\Bundle\MigrationsBundle\DoctrineMigrationsBundle::class => ['all' => true],
-    Doctrine\Bundle\FixturesBundle\DoctrineFixturesBundle::class => ['all' => true],
     Sylius\Bundle\FixturesBundle\SyliusFixturesBundle::class => ['all' => true],
     Sylius\Bundle\PayumBundle\SyliusPayumBundle::class => ['all' => true],
     Sylius\Bundle\ThemeBundle\SyliusThemeBundle::class => ['all' => true],
diff --git a/tests/Application/config/packages/sonata_core.yaml b/tests/Application/config/packages/sonata_core.yaml
deleted file mode 100755
index e9a6e89..0000000
--- a/tests/Application/config/packages/sonata_core.yaml
+++ /dev/null
@@ -1,4 +0,0 @@
-sonata_core:
-    form:
-        mapping:
-            enabled: false
diff --git a/tests/Application/config/packages/twig.yaml b/tests/Application/config/packages/twig.yaml
index 3b315dc..8545473 100755
--- a/tests/Application/config/packages/twig.yaml
+++ b/tests/Application/config/packages/twig.yaml
@@ -2,3 +2,11 @@ twig:
     paths: ['%kernel.project_dir%/templates']
     debug: '%kernel.debug%'
     strict_variables: '%kernel.debug%'
+
+services:
+    _defaults:
+        public: false
+        autowire: true
+        autoconfigure: true
+
+    Twig\Extra\Intl\IntlExtension: ~
diff --git a/tests/Application/package.json b/tests/Application/package.json
index 14072b2..f1dc816 100755
--- a/tests/Application/package.json
+++ b/tests/Application/package.json
@@ -1,9 +1,12 @@
 {
   "dependencies": {
     "babel-polyfill": "^6.26.0",
-    "jquery": "^3.2.0",
+    "chart.js": "^2.9.3",
+    "jquery": "^3.5.0",
+    "jquery.dirtyforms": "^2.0.0",
     "lightbox2": "^2.9.0",
-    "semantic-ui-css": "^2.2.0"
+    "semantic-ui-css": "^2.2.0",
+    "slick-carousel": "^1.8.1"
   },
   "devDependencies": {
     "babel-core": "^6.26.3",
diff --git a/tests/Application/public/index.php b/tests/Application/public/index.php
old mode 100755
new mode 100644
index 2f8f1b1..748fd5f
--- a/tests/Application/public/index.php
+++ b/tests/Application/public/index.php
@@ -1,10 +1,12 @@
 <?php
 
-use Tests\Acme\SyliusExamplePlugin\Application\Kernel;
+declare(strict_types=1);
+
 use Symfony\Component\Debug\Debug;
 use Symfony\Component\HttpFoundation\Request;
+use Tests\Acme\SyliusExamplePlugin\Application\Kernel;
 
-require dirname(__DIR__).'/config/bootstrap.php';
+require dirname(__DIR__) . '/config/bootstrap.php';
 
 if ($_SERVER['APP_DEBUG']) {
     umask(0000);
diff --git a/tests/Behat/Page/External/Przelewy24CheckoutPage.php b/tests/Behat/Page/External/Przelewy24CheckoutPage.php
index a0786f6..a0186a3 100644
--- a/tests/Behat/Page/External/Przelewy24CheckoutPage.php
+++ b/tests/Behat/Page/External/Przelewy24CheckoutPage.php
@@ -20,6 +20,7 @@
 use Sylius\Bundle\ResourceBundle\Doctrine\ORM\EntityRepository;
 use Sylius\Component\Core\Model\PaymentInterface;
 use Sylius\Component\Resource\Repository\RepositoryInterface;
+use Symfony\Component\BrowserKit\AbstractBrowser;
 use Symfony\Component\BrowserKit\Client;
 use Tests\BitBag\SyliusPrzelewy24Plugin\Behat\Service\Mocker\Przelewy24ApiMocker;
 
@@ -43,7 +44,7 @@ public function __construct(
         Przelewy24ApiMocker $przelewy24ApiMocker,
         RepositoryInterface $securityTokenRepository,
         EntityRepository $paymentRepository,
-        Client $client
+        AbstractBrowser $client
     ) {
         parent::__construct($session, $parameters);
 
@@ -68,10 +69,7 @@ public function pay(): void
 
         $this->przelewy24ApiMocker->mockApiSuccessfulVerifyTransaction(function () use ($notifyToken, $postData, $captureToken) {
             $this->client->request('POST', $notifyToken->getTargetUrl(), $postData);
-
-            sleep(1);
-
-            $this->getDriver()->visit($captureToken->getAfterUrl());
+            $this->getDriver()->visit($captureToken->getTargetUrl());
         });
     }