diff --git a/composer.json b/composer.json
index 387b95e..d6cf1f1 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,8 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^4.0",
-        "mockery/mockery": "^0.9"
+        "mockery/mockery": "^0.9",
+        "satooshi/php-coveralls": "0.6"
     },
     "autoload": {
         "psr-4": {