diff --git a/composer.json b/composer.json
index 955779b4..9074137e 100644
--- a/composer.json
+++ b/composer.json
@@ -15,7 +15,8 @@
         "nunomaduro/collision": "~1.1",
         "fzaninotto/faker": "~1.4",
         "mockery/mockery": "~1.0",
-        "phpunit/phpunit": "~6.0"
+        "phpunit/phpunit": "~6.0",
+        "symfony/thanks": "^1.0"
     },
     "autoload": {
         "classmap": [