diff --git a/composer.json b/composer.json
index c0034f7..30483d3 100644
--- a/composer.json
+++ b/composer.json
@@ -14,6 +14,7 @@
   "require-dev": {
     "ext-pdo": "*",
     "phpunit/phpunit": "^10.1",
+    "php-coveralls/php-coveralls": "^2.0",
     "vimeo/psalm": "5.24.0"
   },
   "autoload": {