diff --git a/composer.json b/composer.json
index 4112937..becafb3 100644
--- a/composer.json
+++ b/composer.json
@@ -24,7 +24,7 @@
     },
     "require-dev": {
         "phpunit/phpunit": "~4.8",
-        "satooshi/php-coveralls": "~1.0",
+        "satooshi/php-coveralls": "~2.0",
         "squizlabs/php_codesniffer": "~2.6",
         "friendsofphp/php-cs-fixer": "~1.12"
     },