diff --git a/composer.json b/composer.json
index 0df504b7..c155743e 100644
--- a/composer.json
+++ b/composer.json
@@ -60,6 +60,7 @@
         "docker-down": "PHP_VERSION=8.1 docker-compose down",
         "docker-rebuild": "PHP_VERSION=8.1 docker-compose up -d --no-deps --build",
         "docker-m1": "ln -s docker-compose-m1.override.yml docker-compose.override.yml",
+        "coverage": "open coverage/phpunit/html/index.html",
         "test": "PHP_VERSION=8.1 ./test"
     },
     "minimum-stability": "dev",