diff --git a/composer.json b/composer.json
index a7d2203..c9aa291 100644
--- a/composer.json
+++ b/composer.json
@@ -38,6 +38,6 @@
 },
     "require-dev": {
         "phpstan/phpstan": "1.3.0",
-        "php-coveralls/php-coveralls": "2.5.1"
+        "php-coveralls/php-coveralls": "2.5.2"
     }
 }