diff --git a/composer.json b/composer.json
index 0bf90ba..e3c8b10 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
     "require": {
         "php": ">=7.2",
         "yiisoft/yii": "~1.1.0",
-        "symfony/mailer": ">=4.3"
+        "symfony/mailer": ">=5.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^6.0 || ^7.0 || ^8.0 || ^9.3 || ^10.0.7"