diff --git a/src/Symfony/Component/Mailer/composer.json b/src/Symfony/Component/Mailer/composer.json
index ceb3a6016f..e16d5348c1 100644
--- a/src/Symfony/Component/Mailer/composer.json
+++ b/src/Symfony/Component/Mailer/composer.json
@@ -29,6 +29,7 @@
         "symfony/http-client-contracts": "^1.1",
         "symfony/mailgun-mailer": "^4.4|^5.0",
         "symfony/mailchimp-mailer": "^4.4|^5.0",
+        "symfony/messenger": "^4.4|^5.0",
         "symfony/postmark-mailer": "^4.4|^5.0",
         "symfony/sendgrid-mailer": "^4.4|^5.0"
     },