diff --git a/.env b/.env
index 42c7a42..322045a 100644
--- a/.env
+++ b/.env
@@ -27,3 +27,13 @@ APP_SECRET=ddaf593d53cd6fca2a95f748ceacdfe2
 # IMPORTANT: You MUST configure your server version, either here or in config/packages/doctrine.yaml
 DATABASE_URL=mysql://db_user:db_password@127.0.0.1:3306/db_name?serverVersion=5.7
 ###< doctrine/doctrine-bundle ###
+
+###> symfony/messenger ###
+# Choose one of the transports below
+# MESSENGER_TRANSPORT_DSN=amqp://guest:guest@localhost:5672/%2f/messages
+# MESSENGER_TRANSPORT_DSN=doctrine://default
+# MESSENGER_TRANSPORT_DSN=redis://localhost:6379/messages
+###< symfony/messenger ###
+
+COMPOSER_PATH=composer
+BOX_PATH=box
diff --git a/assets/sass/style.scss b/assets/sass/style.scss
index bd62d4e..a82398d 100755
--- a/assets/sass/style.scss
+++ b/assets/sass/style.scss
@@ -10,9 +10,9 @@
 $footer-height: 60px;
 
 html {
-  font-size: 14px;
   position: relative;
   min-height: 100%;
+  line-height: 1.3;
 }
 
 body {
diff --git a/composer.json b/composer.json
index b6b98d7..4a2f0b4 100644
--- a/composer.json
+++ b/composer.json
@@ -6,6 +6,8 @@
     "ext-ctype": "*",
     "ext-iconv": "*",
     "ext-json": "*",
+    "ext-curl": "*",
+    "ext-zip": "*",
     "kadet/keylighter": "dev-master",
     "league/commonmark": "^1.3",
     "sensio/framework-extra-bundle": "^5.5",
@@ -14,6 +16,7 @@
     "symfony/dotenv": "5.0.*",
     "symfony/flex": "^1.3.1",
     "symfony/framework-bundle": "5.0.*",
+    "symfony/messenger": "5.0.*",
     "symfony/orm-pack": "^1.0",
     "symfony/profiler-pack": "^1.0",
     "symfony/twig-pack": "^1.0",
diff --git a/composer.lock b/composer.lock
index ac83df9..03128ec 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "e2304bcfe75a51f30dd11d1699bab82a",
+    "content-hash": "21e44e8aa90d4d7ae44c34fdfdee4f2c",
     "packages": [
         {
             "name": "doctrine/annotations",
@@ -3104,6 +3104,94 @@
             ],
             "time": "2020-03-30T15:04:59+00:00"
         },
+        {
+            "name": "symfony/messenger",
+            "version": "v5.0.7",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/messenger.git",
+                "reference": "56bec7d319695f6c284af382d803074262a8f074"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/messenger/zipball/56bec7d319695f6c284af382d803074262a8f074",
+                "reference": "56bec7d319695f6c284af382d803074262a8f074",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2.5",
+                "psr/log": "~1.0"
+            },
+            "conflict": {
+                "doctrine/persistence": "<1.3",
+                "symfony/event-dispatcher": "<4.4",
+                "symfony/framework-bundle": "<4.4",
+                "symfony/http-kernel": "<4.4"
+            },
+            "require-dev": {
+                "doctrine/dbal": "^2.6",
+                "doctrine/persistence": "^1.3",
+                "psr/cache": "~1.0",
+                "symfony/console": "^4.4|^5.0",
+                "symfony/dependency-injection": "^4.4|^5.0",
+                "symfony/event-dispatcher": "^4.4|^5.0",
+                "symfony/http-kernel": "^4.4|^5.0",
+                "symfony/process": "^4.4|^5.0",
+                "symfony/property-access": "^4.4|^5.0",
+                "symfony/serializer": "^4.4|^5.0",
+                "symfony/service-contracts": "^1.1|^2",
+                "symfony/stopwatch": "^4.4|^5.0",
+                "symfony/validator": "^4.4|^5.0"
+            },
+            "suggest": {
+                "enqueue/messenger-adapter": "For using the php-enqueue library as a transport."
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "5.0-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\Messenger\\": ""
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Samuel Roze",
+                    "email": "samuel.roze@gmail.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony Messenger Component",
+            "homepage": "https://symfony.com",
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2020-03-27T16:56:45+00:00"
+        },
         {
             "name": "symfony/mime",
             "version": "v5.0.7",
diff --git a/config/packages/messenger.yaml b/config/packages/messenger.yaml
new file mode 100644
index 0000000..677f6c5
--- /dev/null
+++ b/config/packages/messenger.yaml
@@ -0,0 +1,7 @@
+framework:
+    messenger:
+        transports:
+             async: '%env(MESSENGER_TRANSPORT_DSN)%'
+
+        routing:
+             'App\Message\UpdateKeylighterMessage': async
diff --git a/config/services.yaml b/config/services.yaml
index 802f36b..d9f34b0 100644
--- a/config/services.yaml
+++ b/config/services.yaml
@@ -1,8 +1,8 @@
 # put parameters here that don't need to change on each machine where the app is deployed
 # https://symfony.com/doc/current/best_practices/configuration.html#application-related-configuration
 parameters:
-    keylighter_dir: '%kernel.project_dir%/var/keylighter/'
-    keylighter_temp_dir: '%kernel.cache_dir%/keylighter/'
+    keylighter_dir: '%kernel.project_dir%/var/keylighter'
+    keylighter_temp_dir: '/tmp/keylighter'
 
 services:
     # default configuration for services in *this* file
@@ -46,6 +46,12 @@ services:
             - { name: kernel.event_listener, event: kernel.request }
             - { name: kernel.event_listener, event: kernel.response }
 
+    App\MessageHandler\UpdateKeylighterHandler:
+        arguments:
+            $composer:  "%env(COMPOSER_PATH)%"
+            $box:       "%env(BOX_PATH)%"
+            $installed: "%keylighter_dir%/installed.json"
+
     Kadet\Highlighter\KeyLighter:
         class: Kadet\Highlighter\KeyLighter
         factory: 'Kadet\Highlighter\KeyLighter::get'
diff --git a/docker-compose.yml b/docker-compose.yml
index da96df2..7910e68 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -11,8 +11,13 @@ services:
 
   php:
     build: docker/php
+    environment:
+      - MESSENGER_TRANSPORT_DSN=redis://redis:6379/messages
     env_file:
       - ./docker/php/.env
     volumes:
       - ./:/var/www:cached
       - ./docker/php/log.conf:/usr/local/etc/php-fpm.d/zz-log.conf
+
+  redis:
+    image: redis:latest
diff --git a/docker/php/Dockerfile b/docker/php/Dockerfile
index eb9a355..e24fa5e 100644
--- a/docker/php/Dockerfile
+++ b/docker/php/Dockerfile
@@ -3,22 +3,33 @@ FROM php:7.3-fpm
 ARG XDEBUG_REMOTE_HOST="172.17.0.1"
 
 RUN apt-get update && \
-    apt-get install -y --no-install-recommends git zip libzip-dev
+    apt-get install -y --no-install-recommends git zip libzip-dev wget libcurl4-openssl-dev
 
-RUN docker-php-ext-install zip
+RUN docker-php-ext-install zip curl
 
 # XDebug
 RUN pecl install xdebug-2.9.0 && docker-php-ext-enable xdebug
 RUN echo "xdebug.remote_enable = 1" >> /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini && \
     echo "xdebug.remote_host = ${XDEBUG_REMOTE_HOST}" >> /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini;
 
-#Composer
+# Redis
+RUN pecl install -o -f redis && docker-php-ext-enable redis
+
+# Cleanup
+RUN rm -rf /tmp/pear
+
+# Composer
 RUN php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');" \
     && php composer-setup.php \
     && php -r "unlink('composer-setup.php');" \
     && mv composer.phar /usr/local/bin/composer \
     && chmod +x /usr/local/bin/composer
 
+# Box
+RUN wget https://github.com/humbug/box/releases/download/3.8.4/box.phar \
+    && mv box.phar /usr/local/bin/box \
+    && chmod +x /usr/local/bin/box
+
 # Timezone
 RUN ln -snf /usr/share/zoneinfo/Europe/Warsaw /etc/localtime
 RUN echo "date.timezone = Europe/Warsaw" >> /usr/local/etc/php/conf.d/datetime.ini;
diff --git a/src/Command/KeyLighterUpdate.php b/src/Command/KeyLighterUpdate.php
index 5a5c81c..83dcbf5 100755
--- a/src/Command/KeyLighterUpdate.php
+++ b/src/Command/KeyLighterUpdate.php
@@ -30,8 +30,10 @@ class KeyLighterUpdate extends Command
     {
     }
 
-    protected function execute(InputInterface $input, OutputInterface $output)
+    protected function execute(InputInterface $input, OutputInterface $output): int
     {
         $this->versioner->updateAll();
+
+        return 0;
     }
-}
\ No newline at end of file
+}
diff --git a/src/Consumer/.gitignore b/src/Consumer/.gitignore
deleted file mode 100755
index e69de29..0000000
diff --git a/src/Message/UpdateKeylighterMessage.php b/src/Message/UpdateKeylighterMessage.php
new file mode 100644
index 0000000..2ee763e
--- /dev/null
+++ b/src/Message/UpdateKeylighterMessage.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace App\Message;
+
+class UpdateKeylighterMessage
+{
+    private $revision;
+    private $destination;
+
+    public function __construct($revision, $destination)
+    {
+        $this->revision    = $revision;
+        $this->destination = $destination;
+    }
+
+    public function getRevision()
+    {
+        return $this->revision;
+    }
+
+    public function getDestination()
+    {
+        return $this->destination;
+    }
+}
diff --git a/src/Consumer/UpdateKeylighterConsumer.php b/src/MessageHandler/UpdateKeylighterHandler.php
similarity index 77%
rename from src/Consumer/UpdateKeylighterConsumer.php
rename to src/MessageHandler/UpdateKeylighterHandler.php
index cc7a1ed..5dac566 100755
--- a/src/Consumer/UpdateKeylighterConsumer.php
+++ b/src/MessageHandler/UpdateKeylighterHandler.php
@@ -1,47 +1,34 @@
 <?php
 
-
-namespace App\Consumer;
-
+namespace App\MessageHandler;
 
 use App\Exception\CommandExecuteException;
+use App\Message\UpdateKeylighterMessage;
 use FilesystemIterator;
-use OldSound\RabbitMqBundle\RabbitMq\ConsumerInterface;
-use PhpAmqpLib\Message\AMQPMessage;
 use Psr\Log\LoggerInterface;
 use Symfony\Component\Filesystem\Exception\IOException;
 use Symfony\Component\Filesystem\Filesystem;
+use Symfony\Component\Messenger\Handler\MessageHandlerInterface;
+use Symfony\Component\Messenger\Handler\MessageSubscriberInterface;
 
-class UpdateKeylighterConsumer implements ConsumerInterface
+class UpdateKeylighterHandler implements MessageHandlerInterface, MessageSubscriberInterface
 {
-    /** @var \App\Service\KeyLighterVersioner */
-    private $versioner;
-
-    /**
-     * @var \Psr\Log\LoggerInterface
-     */
     private $logger;
-    private $composer;
     private $filesystem;
 
-    private $temp;
+    private $temp = '/tmp/keylighter/';
     private $installed;
+
+    private $composer;
     private $box;
 
-    /**
-     * UpdateKeylighterConsumer constructor.
-     *
-     * @param \Psr\Log\LoggerInterface                 $logger
-     * @param \Symfony\Component\Filesystem\Filesystem $filesystem
-     * @param                                          $composer
-     * @param                                          $box
-     */
-    public function __construct(LoggerInterface $logger, Filesystem $filesystem, $composer, $box)
+    public function __construct(LoggerInterface $logger, Filesystem $filesystem, $composer, $box, $installed)
     {
         $this->logger     = $logger;
         $this->composer   = $composer;
         $this->box        = $box;
         $this->filesystem = $filesystem;
+        $this->installed  = $installed;
     }
 
     /**
@@ -61,32 +48,11 @@ class UpdateKeylighterConsumer implements ConsumerInterface
         return realpath($path);
     }
 
-    /**
-     * @param mixed $temp
-     */
-    public function setTemp($temp)
+    public function __invoke(UpdateKeylighterMessage $message)
     {
-        $this->temp = $temp;
-        $this->filesystem->mkdir($this->temp, 0755);
-    }
+        $this->logger->info(sprintf('Downloading KeyLighter revision %s to %s', $message->getRevision()['version'], $message->getDestination()));
 
-    public function setInstalledFile(string $path)
-    {
-        $this->installed = $path;
-    }
-
-    /**
-     * @param AMQPMessage $msg The message
-     *
-     * @return mixed false to reject and requeue, any other value to acknowledge
-     */
-    public function execute(AMQPMessage $msg)
-    {
-        list($destination, $revision) = unserialize($msg->getBody());
-
-        $this->logger->info(sprintf('Downloading KeyLighter revision %s to %s', $revision['version'], $destination));
-
-        return $this->download($revision, $destination);
+        return $this->download($message->getRevision(), $message->getDestination());
     }
 
     private function download($revision, $destination)
@@ -103,7 +69,7 @@ class UpdateKeylighterConsumer implements ConsumerInterface
         $cwd = getcwd();
         chdir($destination);
         try {
-            $this->runCommands([ $this->composer.' install -n --no-ansi --quiet' ]);
+            $this->runCommands([ $this->composer.' install -n --no-ansi --quiet --no-dev' ]);
 
             if (file_exists('./box.json.dist')) {
                 $this->runCommands([ $this->box.' build -n --no-ansi']);
@@ -159,6 +125,7 @@ class UpdateKeylighterConsumer implements ConsumerInterface
             if ($this->filesystem->exists($final)) {
                 $this->filesystem->remove($final);
             }
+
             $this->filesystem->rename($dir, $final, true);
 
             return true;
@@ -202,4 +169,12 @@ class UpdateKeylighterConsumer implements ConsumerInterface
 
         file_put_contents($this->installed, json_encode($entries, true), LOCK_EX);
     }
-}
\ No newline at end of file
+
+    /**
+     * @inheritDoc
+     */
+    public static function getHandledMessages(): iterable
+    {
+        yield UpdateKeylighterMessage::class;
+    }
+}
diff --git a/src/Service/KeyLighterVersioner.php b/src/Service/KeyLighterVersioner.php
index 6afd4e6..86456b2 100755
--- a/src/Service/KeyLighterVersioner.php
+++ b/src/Service/KeyLighterVersioner.php
@@ -1,27 +1,27 @@
 <?php
 
-
 namespace App\Service;
 
-
-use Symfony\Component\DependencyInjection\ParameterBag\ParameterBag;
+use App\Message\UpdateKeylighterMessage;
 use Symfony\Component\DependencyInjection\ParameterBag\ParameterBagInterface;
 use Symfony\Component\Filesystem\Filesystem;
+use Symfony\Component\Messenger\MessageBusInterface;
 
 class KeyLighterVersioner
 {
     const URL = 'https://packagist.org/p/kadet/keylighter.json';
 
-    private $dir      = '';
     private $current;
 
     private $filesystem;
     private $parameters;
+    private $bus;
 
-    public function __construct(Filesystem $filesystem, ParameterBagInterface $parameters)
+    public function __construct(Filesystem $filesystem, ParameterBagInterface $parameters, MessageBusInterface $bus)
     {
         $this->filesystem = $filesystem;
         $this->parameters = $parameters;
+        $this->bus = $bus;
     }
 
     public function getAvailableVersions()
@@ -51,7 +51,7 @@ class KeyLighterVersioner
                 continue;
             }
 
-            // fixme: add package to download queue
+            $this->bus->dispatch(new UpdateKeylighterMessage($revision,  $this->getDirectory($version)));
         }
     }
 
diff --git a/symfony.lock b/symfony.lock
index b725b32..89dd483 100644
--- a/symfony.lock
+++ b/symfony.lock
@@ -204,6 +204,18 @@
     "symfony/http-kernel": {
         "version": "v5.0.7"
     },
+    "symfony/messenger": {
+        "version": "4.3",
+        "recipe": {
+            "repo": "github.com/symfony/recipes",
+            "branch": "master",
+            "version": "4.3",
+            "ref": "8a2675c061737658bed85102e9241c752620e575"
+        },
+        "files": [
+            "config/packages/messenger.yaml"
+        ]
+    },
     "symfony/mime": {
         "version": "v5.0.7"
     },