diff --git a/composer.json b/composer.json
index 0fb378e52..944a35bb6 100644
--- a/composer.json
+++ b/composer.json
@@ -25,6 +25,9 @@
         "mockery/mockery": "~0.9.1",
         "symfony/phpunit-bridge": "~3.2"
     },
+    "replace": {
+        "swiftmailer/swiftmailer": "^5"
+    },
     "autoload": {
         "files": ["lib/swift_required.php"]
     },