diff --git a/composer.json b/composer.json
index 06f54e2..d9fad06 100644
--- a/composer.json
+++ b/composer.json
@@ -9,7 +9,8 @@
         "symfony/yaml": "2.4.*"
     },
     "require-dev": {
-        "phpunit/phpunit": "4.0.*"
+        "phpunit/phpunit": "4.0.*",
+        "satooshi/php-coveralls": "0.6.*"
     },
     "autoload": {
         "psr-4": {