diff --git a/src/Symfony/Component/Mailer/Bridge/Mailgun/Tests/Transport/MailgunTransportFactoryTest.php b/src/Symfony/Component/Mailer/Bridge/Mailgun/Tests/Transport/MailgunTransportFactoryTest.php
index a88f1e153a8f..abc47cf6e9d7 100644
--- a/src/Symfony/Component/Mailer/Bridge/Mailgun/Tests/Transport/MailgunTransportFactoryTest.php
+++ b/src/Symfony/Component/Mailer/Bridge/Mailgun/Tests/Transport/MailgunTransportFactoryTest.php
@@ -98,12 +98,12 @@ public static function createProvider(): iterable
 
         yield [
             new Dsn('mailgun+smtp', 'default', self::USER, self::PASSWORD),
-            new MailgunSmtpTransport(self::USER, self::PASSWORD, null, null, $logger),
+            new MailgunSmtpTransport(self::USER, self::PASSWORD, null, null, null, $logger),
         ];
 
         yield [
             new Dsn('mailgun+smtps', 'default', self::USER, self::PASSWORD),
-            new MailgunSmtpTransport(self::USER, self::PASSWORD, null, null, $logger),
+            new MailgunSmtpTransport(self::USER, self::PASSWORD, null, null, null, $logger),
         ];
     }
 
diff --git a/src/Symfony/Component/Mailer/Bridge/Mailgun/Transport/MailgunSmtpTransport.php b/src/Symfony/Component/Mailer/Bridge/Mailgun/Transport/MailgunSmtpTransport.php
index 84c4479d2def..411302a2046f 100644
--- a/src/Symfony/Component/Mailer/Bridge/Mailgun/Transport/MailgunSmtpTransport.php
+++ b/src/Symfony/Component/Mailer/Bridge/Mailgun/Transport/MailgunSmtpTransport.php
@@ -22,9 +22,9 @@ class MailgunSmtpTransport extends EsmtpTransport
 {
     use MailgunHeadersTrait;
 
-    public function __construct(string $username, #[\SensitiveParameter] string $password, string $region = null, EventDispatcherInterface $dispatcher = null, LoggerInterface $logger = null)
+    public function __construct(string $username, #[\SensitiveParameter] string $password, string $region = null, int $port = null, EventDispatcherInterface $dispatcher = null, LoggerInterface $logger = null)
     {
-        parent::__construct('us' !== ($region ?: 'us') ? sprintf('smtp.%s.mailgun.org', $region) : 'smtp.mailgun.org', 465, true, $dispatcher, $logger);
+        parent::__construct('us' !== ($region ?: 'us') ? sprintf('smtp.%s.mailgun.org', $region) : 'smtp.mailgun.org', $port ?? 465, true, $dispatcher, $logger);
 
         $this->setUsername($username);
         $this->setPassword($password);
diff --git a/src/Symfony/Component/Mailer/Bridge/Mailgun/Transport/MailgunTransportFactory.php b/src/Symfony/Component/Mailer/Bridge/Mailgun/Transport/MailgunTransportFactory.php
index c238f832fae8..297d942a5457 100644
--- a/src/Symfony/Component/Mailer/Bridge/Mailgun/Transport/MailgunTransportFactory.php
+++ b/src/Symfony/Component/Mailer/Bridge/Mailgun/Transport/MailgunTransportFactory.php
@@ -39,7 +39,7 @@ public function create(Dsn $dsn): TransportInterface
         }
 
         if ('mailgun+smtp' === $scheme || 'mailgun+smtps' === $scheme) {
-            return new MailgunSmtpTransport($user, $password, $region, $this->dispatcher, $this->logger);
+            return new MailgunSmtpTransport($user, $password, $region, $port, $this->dispatcher, $this->logger);
         }
 
         throw new UnsupportedSchemeException($dsn, 'mailgun', $this->getSupportedSchemes());