diff --git a/composer.json b/composer.json
index 80129d59..c3c3e313 100644
--- a/composer.json
+++ b/composer.json
@@ -1,5 +1,5 @@
 {
-  "name": "cleentfaar/slack",
+  "name": "mrvnklm/slack",
   "description": "Access your Slack Team's API through PHP objects",
   "homepage": "http://cleentfaar.github.io/slack/",
   "keywords": [
@@ -19,16 +19,16 @@
   "require": {
     "php": ">=5.5",
     "ext-curl": "*",
-    "jms/serializer": "^1.0",
-    "symfony/event-dispatcher": "^2.3|^3.0|~4.0",
-    "symfony/yaml": "^2.3|^3.0|~4.0",
+    "jms/serializer": "^1.0|^2.0|^3.0",
+    "symfony/event-dispatcher": "^4.0",
+    "symfony/yaml": "^4.1",
     "guzzlehttp/guzzle": "^6.0",
     "doctrine/collections": "^1.2"
   },
   "require-dev": {
     "phpunit/phpunit": "^4.7",
     "mockery/mockery": "^0.9",
-    "symfony/var-dumper": "^2.3|^3.0|~4.0"
+    "symfony/var-dumper": "^4.0"
   },
   "suggest": {
     "cleentfaar/slack-bundle": "For easy integration with your Symfony projects",