diff --git a/composer.json b/composer.json
index e02c17d16..bdbb9543c 100644
--- a/composer.json
+++ b/composer.json
@@ -57,7 +57,7 @@
         "matomo/device-detector": "4.1.0",
         "dragonmantank/cron-expression": "3.1.0",
         "influxdb/influxdb-php": "1.15.2",
-        "phpmailer/phpmailer": "6.3.0",
+        "phpmailer/phpmailer": "6.4.1",
         "chillerlan/php-qrcode": "4.3.0",
         "adhocore/jwt": "1.1.2",
         "slickdeals/statsd": "~3.0"
diff --git a/composer.lock b/composer.lock
index 46a4fb4e5..723654a0d 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "a2e0fa49ac6df10ab340396b51546c3d",
+    "content-hash": "370390f068a8308603f857c40984de72",
     "packages": [
         {
             "name": "adhocore/jwt",
@@ -786,16 +786,16 @@
         },
         {
             "name": "phpmailer/phpmailer",
-            "version": "v6.3.0",
+            "version": "v6.4.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/PHPMailer/PHPMailer.git",
-                "reference": "4a08cf4cdd2c38d12ee2b9fa69e5d235f37a6dcb"
+                "reference": "9256f12d8fb0cd0500f93b19e18c356906cbed3d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/PHPMailer/PHPMailer/zipball/4a08cf4cdd2c38d12ee2b9fa69e5d235f37a6dcb",
-                "reference": "4a08cf4cdd2c38d12ee2b9fa69e5d235f37a6dcb",
+                "url": "https://api.github.com/repos/PHPMailer/PHPMailer/zipball/9256f12d8fb0cd0500f93b19e18c356906cbed3d",
+                "reference": "9256f12d8fb0cd0500f93b19e18c356906cbed3d",
                 "shasum": ""
             },
             "require": {
@@ -813,7 +813,7 @@
                 "yoast/phpunit-polyfills": "^0.2.0"
             },
             "suggest": {
-                "ext-mbstring": "Needed to send email in multibyte encoding charset",
+                "ext-mbstring": "Needed to send email in multibyte encoding charset or decode encoded addresses",
                 "hayageek/oauth2-yahoo": "Needed for Yahoo XOAUTH2 authentication",
                 "league/oauth2-google": "Needed for Google XOAUTH2 authentication",
                 "psr/log": "For optional PSR-3 debug logging",
@@ -850,7 +850,7 @@
             "description": "PHPMailer is a full-featured email creation and transfer class for PHP",
             "support": {
                 "issues": "https://github.com/PHPMailer/PHPMailer/issues",
-                "source": "https://github.com/PHPMailer/PHPMailer/tree/v6.3.0"
+                "source": "https://github.com/PHPMailer/PHPMailer/tree/v6.4.1"
             },
             "funding": [
                 {
@@ -858,7 +858,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2021-02-19T15:28:08+00:00"
+            "time": "2021-04-29T12:25:04+00:00"
         },
         {
             "name": "psr/http-client",