diff --git a/symfony/mailgun-mailer/4.4/manifest.json b/symfony/mailgun-mailer/4.4/manifest.json
index a80fd18f..34d2ee7a 100644
--- a/symfony/mailgun-mailer/4.4/manifest.json
+++ b/symfony/mailgun-mailer/4.4/manifest.json
@@ -1,6 +1,6 @@
 {
     "env": {
         "#1": "MAILER_DSN=mailgun://KEY:DOMAIN@default",
-        "#2": "MAILER_DSN=mailgun+smtp://USERNAME:PASSWORD@default"
+        "#2": "MAILER_DSN=mailgun+smtp://USERNAME:PASSWORD@default?region=us"
     }
 }