diff --git a/composer.json b/composer.json
index 0a5abab..bdfc5b1 100644
--- a/composer.json
+++ b/composer.json
@@ -37,7 +37,8 @@
         "phpstan/phpstan": "^1.9",
         "phpunit/phpunit": "^9.3",
         "slevomat/coding-standard": "^7.0",
-        "squizlabs/php_codesniffer": "^3.6"
+        "squizlabs/php_codesniffer": "^3.6",
+        "zenstruck/messenger-test": "^1.11"
     },
     "autoload": {
         "psr-4": {