diff --git a/CHANGELOG b/CHANGELOG
index 4490db5..b579a06 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,10 @@
+SlackBundle v1.4.0
+==================
+- Feature: Monolog-Logger uses colored attachments based on the log level (by @jdecoster)
+- Patch: Quoting Services to Support Symfony > 2.8 (by @carlosmasip)
+- Patch: Fix deprecation in configuration
+- Patch: Enable Symfony 3.0 and PHP 7
+
 SlackBundle v1.3.0
 ==================
 - Feature: File upload service now accepts an array of channels, string usage is deprecated
diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index 0fc2bd3..db421b1 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -27,7 +27,7 @@ public function getConfigTreeBuilder()
             ->end()
             ->integerNode('limit_retries')
                 ->defaultValue(3)
-                ->cannotBeEmpty()
+                ->min(1)
                 ->info('The amount of retries for the connection if the Rate Limits of Slack are reached')
             ->end()
         ->end();
diff --git a/Monolog/Handler/SlackHandler.php b/Monolog/Handler/SlackHandler.php
index 3758a8f..cbb8217 100644
--- a/Monolog/Handler/SlackHandler.php
+++ b/Monolog/Handler/SlackHandler.php
@@ -2,6 +2,7 @@
 
 namespace DZunke\SlackBundle\Monolog\Handler;
 
+use DZunke\SlackBundle\Slack\Entity\MessageAttachment;
 use DZunke\SlackBundle\Slack\Messaging;
 use Monolog\Formatter\LineFormatter;
 use Monolog\Handler\AbstractProcessingHandler;
@@ -47,7 +48,28 @@ public function __construct(Messaging $messaging, $channel, $username, $level =
 
     protected function write(array $record)
     {
-        $this->messagingClient->message($this->channel, $record["formatted"], $this->username);
+        $attachment = new MessageAttachment();
+
+        switch($record['level']) {
+            case Logger::DEBUG:
+            case Logger::INFO:
+                $attachment->setColor('good');
+                break;
+            case Logger::NOTICE:
+            case Logger::WARNING:
+                $attachment->setColor('warning');
+                break;
+            case Logger::ERROR:
+            case Logger::CRITICAL:
+            case Logger::ALERT:
+            case Logger::EMERGENCY:
+                $attachment->setColor('danger');
+                break;
+        }
+
+        $attachment->addField($record['level_name'], $record['formatted']);
+
+        $this->messagingClient->message($this->channel, '', $this->username, [$attachment]);
     }
 
     /**
diff --git a/Resources/config/services.yml b/Resources/config/services.yml
index 85a0e42..b984113 100644
--- a/Resources/config/services.yml
+++ b/Resources/config/services.yml
@@ -8,16 +8,16 @@ services:
 
     dz.slack.client:
         class: DZunke\SlackBundle\Slack\Client
-        arguments: [@dz.slack.connection]
+        arguments: ["@dz.slack.connection"]
 
     dz.slack.messaging:
         class: DZunke\SlackBundle\Slack\Messaging
-        arguments: [@dz.slack.client, @dz.slack.identity_bag]
+        arguments: ["@dz.slack.client", "@dz.slack.identity_bag"]
 
     dz.slack.channels:
         class: DZunke\SlackBundle\Slack\Channels
-        arguments: [@dz.slack.client]
+        arguments: ["@dz.slack.client"]
 
     dz.slack.users:
         class: DZunke\SlackBundle\Slack\Users
-        arguments: [@dz.slack.client]
+        arguments: ["@dz.slack.client"]
diff --git a/composer.json b/composer.json
index f898737..a2d9d9c 100644
--- a/composer.json
+++ b/composer.json
@@ -15,7 +15,8 @@
         "exclude": ["/Tests"]
     },
     "require": {
-        "php": ">=5.4.0",
+        "php": ">=5.4",
+        "symfony/symfony": "~2.3|~3.0",
         "guzzle/guzzle": ">=3.7.0"
     },
     "autoload": {