diff --git a/composer.json b/composer.json
index 9fb68d2..6e8a2af 100644
--- a/composer.json
+++ b/composer.json
@@ -6,14 +6,14 @@
     "require": {
         "php": "^7.1",
         "php-amqplib/rabbitmq-bundle": "^1.12",
-        "simple-bus/message-bus": "^3.0",
-        "simple-bus/symfony-bridge": "^5.1",
+        "simple-bus/message-bus": "^2.2 || ^3.0",
+        "simple-bus/symfony-bridge": "^4.1 || ^5.1",
         "symfony/monolog-bundle": "^3.1"
     },
     "require-dev": {
-        "matthiasnoback/symfony-dependency-injection-test": "^3.0",
-        "phpspec/phpspec": "^5.0",
-        "phpunit/phpunit": "^7.0",
+        "matthiasnoback/symfony-dependency-injection-test": "^1.1",
+        "phpspec/phpspec": "^4.0",
+        "phpunit/phpunit": "^5.6",
         "sylius-labs/coding-standard": "^2.0"
     },
     "autoload": {
diff --git a/src/Resources/config/services.xml b/src/Resources/config/services.xml
index e3f4ce2..36cf69d 100644
--- a/src/Resources/config/services.xml
+++ b/src/Resources/config/services.xml
@@ -2,7 +2,7 @@
 
 <container xmlns="http://symfony.com/schema/dic/services" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd">
     <services>
-        <service id="rabbitmq_simplebus.consumer" class="SyliusLabs\RabbitMqSimpleBusBundle\Consumer\RabbitMqConsumer">
+        <service id="rabbitmq_simplebus.consumer" class="SyliusLabs\RabbitMqSimpleBusBundle\Consumer\RabbitMqConsumer" public="true">
             <argument type="service" id="rabbitmq_simplebus.amqp_denormalizer" />
             <argument type="service" id="rabbitmq_simplebus.bus" />
             <argument type="service" id="monolog.logger" />