diff --git a/composer.json b/composer.json
index 7db83cf..0edbf98 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,6 @@
         "php": ">=7.4.0",
         "yiisoft/yii2": "~2.0.14",
         "yiisoft/yii2-bootstrap4": "~2.0.0",
-        "yiisoft/yii2-swiftmailer": "~2.0.0 || ~2.1.0",
         "yiisoft/yii2-symfonymailer": "~2.0.3"
     },
     "require-dev": {
diff --git a/config/test.php b/config/test.php
index f95bc03..f2e26ef 100644
--- a/config/test.php
+++ b/config/test.php
@@ -17,6 +17,7 @@ return [
         'db' => $db,
         'mailer' => [
             'useFileTransport' => true,
+            'messageClass' => 'yii\symfonymailer\Message'
         ],
         'assetManager' => [
             'basePath' => __DIR__ . '/../web/assets',