diff --git a/.gitignore b/.gitignore
index 363611e..056de66 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,2 @@
 /.idea
-/composer.lock
+build/
diff --git a/Controller/UploadController.php b/Controller/UploadController.php
index c76d4e9..63074e0 100644
--- a/Controller/UploadController.php
+++ b/Controller/UploadController.php
@@ -25,8 +25,8 @@
 use Glavweb\UploaderBundle\Response\Response as UploaderResponse;
 use Glavweb\UploaderBundle\Response\ResponseInterface;
 use Glavweb\UploaderBundle\UploadEvents;
-use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
-use Symfony\Bundle\FrameworkBundle\Controller\Controller;
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\Routing\Annotation\Route;
 use Symfony\Component\HttpFoundation\File\Exception\UploadException;
 use Symfony\Component\HttpFoundation\File\File;
 use Symfony\Component\HttpFoundation\File\UploadedFile;
@@ -41,7 +41,7 @@
  * @package Glavweb\UploaderBundle
  * @author Andrey Nilov <nilov@glavweb.ru>
  */
-class UploadController extends Controller
+class UploadController extends AbstractController
 {
     /**
      * @var array
@@ -114,7 +114,7 @@ public function uploadLinkAction(Request $request, $context)
      */
     public function progressAction(Request $request)
     {
-        $session = $this->container->get('session');
+        $session = $this->get('session');
 
         $prefix = ini_get('session.upload_progress.prefix');
         $name   = ini_get('session.upload_progress.name');
@@ -135,7 +135,7 @@ public function progressAction(Request $request)
      */
     public function cancelAction(Request $request)
     {
-        $session = $this->container->get('session');
+        $session = $this->get('session');
 
         $prefix = ini_get('session.upload_progress.prefix');
         $name   = ini_get('session.upload_progress.name');
@@ -284,7 +284,7 @@ protected function getFiles(FileBag $bag)
     protected function doUpload(File $file, ResponseInterface $response, Request $request, $context)
     {
         /** @var UploaderManager $uploaderManager */
-        $uploaderManager = $this->container->get('glavweb_uploader.uploader_manager');
+        $uploaderManager = $this->get('glavweb_uploader.uploader_manager');
         $mediaStructure  = $this->get('glavweb_uploader.util.media_structure');
         $config          = $this->getConfig();
 
@@ -382,7 +382,7 @@ protected function dispatchPreUploadEvent(UploaderManager $uploaderManager,
                                               $context)
     {
         $configContext = $uploaderManager->getContextConfig($context);
-        $dispatcher    = $this->container->get('event_dispatcher');
+        $dispatcher    = $this->get('event_dispatcher');
 
         // dispatch pre upload event (both the specific and the general)
         $event = new PreUploadEvent($uploadedFile, $response, $request, $context, $configContext);
@@ -409,7 +409,7 @@ protected function dispatchPostEvents(UploaderManager $uploaderManager,
                                           $context)
     {
         $configContext = $uploaderManager->getContextConfig($context);
-        $dispatcher    = $this->container->get('event_dispatcher');
+        $dispatcher    = $this->get('event_dispatcher');
 
         // dispatch post upload event (both the specific and the general)
         $event = new PostUploadEvent($uploadedFile, $media, $response, $request, $context, $configContext);
@@ -426,7 +426,7 @@ protected function dispatchPostEvents(UploaderManager $uploaderManager,
     protected function validate(UploaderManager $uploaderManager, FileInterface $file, Request $request, $context)
     {
         $configContext = $uploaderManager->getContextConfig($context);
-        $dispatcher    = $this->container->get('event_dispatcher');
+        $dispatcher    = $this->get('event_dispatcher');
 
         // dispatch validation event (both the specific and the general)
         $event = new ValidationEvent($file, $request, $configContext, $context);
diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index 23be11b..6e654ac 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -29,8 +29,8 @@ class Configuration implements ConfigurationInterface
      */
     public function getConfigTreeBuilder()
     {
-        $treeBuilder = new TreeBuilder();
-        $rootNode = $treeBuilder->root('glavweb_uploader');
+        $treeBuilder = new TreeBuilder('glavweb_uploader');
+        $rootNode = $treeBuilder->getRootNode();
 
         $rootNode
             ->children()
@@ -80,8 +80,6 @@ public function getConfigTreeBuilder()
                 ->end()
                 ->arrayNode('mappings')
                     ->useAttributeAsKey('id')
-                    ->isRequired()
-                    ->requiresAtLeastOneElement()
                     ->prototype('array')
                         ->children()
                             ->arrayNode('providers')
diff --git a/DependencyInjection/GlavwebUploaderExtension.php b/DependencyInjection/GlavwebUploaderExtension.php
index 08071b1..22721a5 100644
--- a/DependencyInjection/GlavwebUploaderExtension.php
+++ b/DependencyInjection/GlavwebUploaderExtension.php
@@ -11,12 +11,10 @@
 
 namespace Glavweb\UploaderBundle\DependencyInjection;
 
-use Liip\ImagineBundle\Templating\Helper\FilterHelper;
-use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\Config\FileLocator;
-use Symfony\Component\DependencyInjection\Reference;
-use Symfony\Component\HttpKernel\DependencyInjection\Extension;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Loader;
+use Symfony\Component\HttpKernel\DependencyInjection\Extension;
 
 /**
  * This is the class that loads and manages your bundle configuration
@@ -44,12 +42,6 @@ public function load(array $configs, ContainerBuilder $container)
         $loader->load('services.xml');
 
         $container->setParameter('glavweb_uploader.config', $config);
-
-        if (class_exists(FilterHelper::class)) {
-            $container->getDefinition('glavweb_uploader.util.media_structure')->addMethodCall('setImagineHelper', [
-                new Reference('liip_imagine.templating.filter_helper')
-            ]);
-        }
     }
 
     /**
@@ -59,8 +51,9 @@ public function load(array $configs, ContainerBuilder $container)
     public function applyMappingsDefaults($config)
     {
         $defaults = $config['mappings_defaults'];
+        $mappings = $config['mappings'];
 
-        foreach ($config['mappings'] as &$contextConfig) {
+        foreach ($mappings as &$contextConfig) {
 
             foreach ($contextConfig as $key => $value) {
                 if ((is_array($value) && empty($value)) || $value === null) {
diff --git a/Entity/Media.php b/Entity/Media.php
index 8b4ab49..49e5925 100644
--- a/Entity/Media.php
+++ b/Entity/Media.php
@@ -14,7 +14,6 @@
 use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\ORM\Mapping as ORM;
 use Glavweb\UploaderBundle\Model\MediaInterface;
-use Symfony\Component\Validator\Constraints as Assert;
 
 /**
  * Class Media
diff --git a/Event/PostUploadEvent.php b/Event/PostUploadEvent.php
index b739f1a..b55d71f 100644
--- a/Event/PostUploadEvent.php
+++ b/Event/PostUploadEvent.php
@@ -13,7 +13,7 @@
 
 use Glavweb\UploaderBundle\File\FileInterface;
 use Glavweb\UploaderBundle\Model\MediaInterface;
-use Symfony\Component\EventDispatcher\Event;
+use Symfony\Contracts\EventDispatcher\Event;
 use Symfony\Component\HttpFoundation\Request;
 use Glavweb\UploaderBundle\Response\ResponseInterface;
 
diff --git a/Event/PreUploadEvent.php b/Event/PreUploadEvent.php
index db0c561..c6cde86 100644
--- a/Event/PreUploadEvent.php
+++ b/Event/PreUploadEvent.php
@@ -12,7 +12,7 @@
 namespace Glavweb\UploaderBundle\Event;
 
 use Glavweb\UploaderBundle\File\FileInterface;
-use Symfony\Component\EventDispatcher\Event;
+use Symfony\Contracts\EventDispatcher\Event;
 use Symfony\Component\HttpFoundation\Request;
 use Glavweb\UploaderBundle\Response\ResponseInterface;
 
diff --git a/Event/ValidationEvent.php b/Event/ValidationEvent.php
index bd53952..d900fc1 100644
--- a/Event/ValidationEvent.php
+++ b/Event/ValidationEvent.php
@@ -12,7 +12,7 @@
 namespace Glavweb\UploaderBundle\Event;
 
 use Glavweb\UploaderBundle\File\FileInterface;
-use Symfony\Component\EventDispatcher\Event;
+use Symfony\Contracts\EventDispatcher\Event;
 use Symfony\Component\HttpFoundation\Request;
 
 /**
diff --git a/File/FileInterface.php b/File/FileInterface.php
index 9a39466..a6c1262 100644
--- a/File/FileInterface.php
+++ b/File/FileInterface.php
@@ -97,5 +97,5 @@ public function guessExtension();
      *
      * @return self A File object representing the new file
      */
-    public function move($directory, $name = null);
+    public function move(string $directory, string $name = null);
 }
diff --git a/File/FilesystemFile.php b/File/FilesystemFile.php
index f7fd383..731a46a 100644
--- a/File/FilesystemFile.php
+++ b/File/FilesystemFile.php
@@ -33,7 +33,6 @@ public function __construct(File $file, string $originalName = null)
                 $file->getPathname(),
                 $originalName ?? $file->getClientOriginalName(),
                 $file->getClientMimeType(),
-                $file->getClientSize(),
                 $file->getError(),
                 true
             );
@@ -43,7 +42,6 @@ public function __construct(File $file, string $originalName = null)
                 $file->getPathname(),
                 $originalName ?? $file->getBasename(),
                 $file->getMimeType(),
-                $file->getSize(),
                 0,
                 true
             );
diff --git a/Resources/config/services.xml b/Resources/config/services.xml
index b673681..1da9820 100644
--- a/Resources/config/services.xml
+++ b/Resources/config/services.xml
@@ -83,6 +83,7 @@
 
         <service id="glavweb_uploader.util.media_structure" class="Glavweb\UploaderBundle\Util\MediaStructure" public="true">
             <argument type="service" id="glavweb_uploader.media_helper" />
+            <argument type="service" id="liip_imagine.cache.manager" />
         </service>
 
         <service id="glavweb_uploader.command.clear_orphans_command" class="Glavweb\UploaderBundle\Command\ClearOrphansCommand">
diff --git a/Storage/FlysystemStorage.php b/Storage/FlysystemStorage.php
index e2a6c89..cc5d3d3 100644
--- a/Storage/FlysystemStorage.php
+++ b/Storage/FlysystemStorage.php
@@ -11,7 +11,6 @@
 
 namespace Glavweb\UploaderBundle\Storage;
 
-use Glavweb\UploaderBundle\Exception\CropImageException;
 use Glavweb\UploaderBundle\File\FileInterface;
 use Glavweb\UploaderBundle\File\FilesystemFile;
 use Glavweb\UploaderBundle\File\FlysystemFile;
diff --git a/Util/MediaStructure.php b/Util/MediaStructure.php
index ac915d4..01c63a6 100644
--- a/Util/MediaStructure.php
+++ b/Util/MediaStructure.php
@@ -15,6 +15,7 @@
 use Glavweb\UploaderBundle\Exception\Exception;
 use Glavweb\UploaderBundle\Helper\MediaHelper;
 use Glavweb\UploaderBundle\Model\MediaInterface;
+use Liip\ImagineBundle\Imagine\Cache\CacheManager;
 use Liip\ImagineBundle\Templating\Helper\FilterHelper;
 
 /**
@@ -33,24 +34,18 @@ class MediaStructure
     /**
      * @var FilterHelper
      */
-    private $imagineHelper;
+    private $cacheManager;
 
     /**
      * MediaStructure constructor.
      *
-     * @param MediaHelper $mediaHelper
+     * @param MediaHelper  $mediaHelper
+     * @param CacheManager $cacheManager
      */
-    public function __construct(MediaHelper $mediaHelper)
+    public function __construct(MediaHelper $mediaHelper, CacheManager $cacheManager)
     {
-        $this->mediaHelper   = $mediaHelper;
-    }
-
-    /**
-     * @param FilterHelper $imagineHelper
-     */
-    public function setImagineHelper($imagineHelper)
-    {
-        $this->imagineHelper = $imagineHelper;
+        $this->mediaHelper  = $mediaHelper;
+        $this->cacheManager = $cacheManager;
     }
 
     /**
@@ -84,12 +79,8 @@ public function getMediaStructure(MediaInterface $media, $thumbnailFilter = null
         $thumbnailPath = null;
         if ($media->getThumbnailPath()) {
             if ($thumbnailFilter) {
-                if (!$this->imagineHelper instanceof FilterHelper) {
-                    throw new Exception('FilterHelper is not defined. You need use Liip\ImagineBundle.');
-                }
-
                 $thumbnailPath = $this->mediaHelper->getThumbnailPath($media, false);
-                $thumbnailPath = $this->imagineHelper->filter($thumbnailPath, $thumbnailFilter);
+                $thumbnailPath = $this->cacheManager->getBrowserPath($thumbnailPath, $thumbnailFilter);
 
             } else {
                 $thumbnailPath = $this->mediaHelper->getThumbnailPath($media, $isAbsolute);
diff --git a/ci/integration-test/Dockerfile b/ci/integration-test/Dockerfile
new file mode 100644
index 0000000..0e94c7a
--- /dev/null
+++ b/ci/integration-test/Dockerfile
@@ -0,0 +1,28 @@
+FROM php:7.2.5-cli
+
+ARG BUNDLE_VERSION
+ARG PACKAGE_NAME
+
+RUN apt-get update && \
+    apt-get install -y \
+      unzip \
+      libzip-dev \
+      libpq-dev \
+    && docker-php-ext-install zip pdo_pgsql 
+
+COPY --from=composer /usr/bin/composer /usr/bin/composer
+
+WORKDIR /usr/src/
+
+RUN composer create-project symfony/skeleton:"^5.3" app
+
+COPY scripts/ scripts/
+RUN chmod +x scripts/*
+
+WORKDIR /usr/src/app
+
+RUN composer require --dev phpunit/phpunit symfony/test-pack
+
+COPY environment .
+
+RUN composer config repositories.glavweb "{\"type\": \"path\", \"url\": \"../bundle\", \"options\": {\"versions\": { \"$PACKAGE_NAME\": \"$BUNDLE_VERSION\" }}}"
\ No newline at end of file
diff --git a/ci/integration-test/environment/config/bundles.php b/ci/integration-test/environment/config/bundles.php
new file mode 100644
index 0000000..3166626
--- /dev/null
+++ b/ci/integration-test/environment/config/bundles.php
@@ -0,0 +1,8 @@
+<?php
+
+return [
+    Symfony\Bundle\FrameworkBundle\FrameworkBundle::class => ['all' => true],
+    Liip\ImagineBundle\LiipImagineBundle::class => ['all' => true],
+    Doctrine\Bundle\DoctrineBundle\DoctrineBundle::class => ['all' => true],
+    Glavweb\UploaderBundle\GlavwebUploaderBundle::class => ['all' => true],
+];
\ No newline at end of file
diff --git a/ci/integration-test/run.sh b/ci/integration-test/run.sh
new file mode 100755
index 0000000..cec8cea
--- /dev/null
+++ b/ci/integration-test/run.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+set -x
+set -e
+
+cd `dirname "$0"`
+
+export BUNDLE_VENDOR=glavweb
+export BUNDLE_NAME=uploader-bundle
+export BUNDLE_VERSION=$(git describe --tags `git rev-list --tags --max-count=1`)
+export PACKAGE_NAME="$BUNDLE_VENDOR/$BUNDLE_NAME"
+export IMAGE_NAME="$BUNDLE_VENDOR-$BUNDLE_NAME-test"
+
+docker build -t $IMAGE_NAME --build-arg BUNDLE_VERSION=$BUNDLE_VERSION --build-arg PACKAGE_NAME=$PACKAGE_NAME .
+
+docker run --tty -i --rm \
+        -v `pwd`/../../:/usr/src/bundle \
+        -v `pwd`/../../build/test:/usr/src/build \
+        -e PACKAGE_NAME="$PACKAGE_NAME" \
+        $IMAGE_NAME \
+        ../scripts/run.sh
\ No newline at end of file
diff --git a/ci/integration-test/scripts/copy.sh b/ci/integration-test/scripts/copy.sh
new file mode 100644
index 0000000..cbe9223
--- /dev/null
+++ b/ci/integration-test/scripts/copy.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+set -x
+
+cd ..
+
+rm -rf build/*
+cp -r app/. build
\ No newline at end of file
diff --git a/ci/integration-test/scripts/run.sh b/ci/integration-test/scripts/run.sh
new file mode 100644
index 0000000..44527a8
--- /dev/null
+++ b/ci/integration-test/scripts/run.sh
@@ -0,0 +1,9 @@
+#!/bin/bash
+set -x
+set -e
+
+composer require -n $PACKAGE_NAME
+
+php bin/phpunit
+
+../scripts/copy.sh
diff --git a/composer.json b/composer.json
index 57c17be..aedfc3c 100644
--- a/composer.json
+++ b/composer.json
@@ -13,13 +13,19 @@
         }
     ],
     "require": {
-        "php": "^7.2",
-        "symfony/http-foundation": "^2.7|^3.0|^4.0|^5.0",
-        "symfony/form": "^2.7|^3.0|^4.0|^5.0",
-        "twig/twig": "^2.12.1|^3.0",
-        "symfony/filesystem": "^2.7|^3.0|^4.0|^5.0",
-        "symfony/finder": "^2.7|^3.0|^4.0|^5.0",
-        "symfony/translation": "^2.7|^3.0|^4.0|^5.0"
+        "php": "^7.2.5",
+        "symfony/http-foundation": "^4.0|^5.0",
+        "symfony/form": "^4.0|^5.0",
+        "symfony/templating": "^4.0|^5.0",
+        "symfony/filesystem": "^4.0|^5.0",
+        "symfony/finder": "^4.0|^5.0",
+        "symfony/translation": "^4.0|^5.0",
+        "symfony/mime": "^4.0|^5.0",
+        "symfony/routing": "^4.0|^5.0",
+        "symfony/event-dispatcher": "^4.0|^5.0",
+        "doctrine/orm": "^2.3",
+        "doctrine/doctrine-bundle": "^2.0",
+        "liip/imagine-bundle": "^2.3.1"
     },
     "suggest": {
         "oneup/flysystem-bundle": "Required for flysystem storage"