diff --git a/composer.json b/composer.json
index 72658f838ac..9f2443f07b9 100644
--- a/composer.json
+++ b/composer.json
@@ -56,7 +56,7 @@
         "matomo/device-detector": "4.2.2",
         "dragonmantank/cron-expression": "3.1.0",
         "influxdb/influxdb-php": "1.15.2",
-        "phpmailer/phpmailer": "6.4.1",
+        "phpmailer/phpmailer": "6.5.0",
         "chillerlan/php-qrcode": "4.3.0",
         "adhocore/jwt": "1.1.2",
         "slickdeals/statsd": "3.0.2"
diff --git a/composer.lock b/composer.lock
index 06cd748df54..fa1ab55f3af 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": "e433ce62dd355a107816e8967d5c769d",
+    "content-hash": "dfafc855a4113b6e392c28ca6d0c2f63",
     "packages": [
         {
             "name": "adhocore/jwt",
@@ -834,16 +834,16 @@
         },
         {
             "name": "phpmailer/phpmailer",
-            "version": "v6.4.1",
+            "version": "v6.5.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/PHPMailer/PHPMailer.git",
-                "reference": "9256f12d8fb0cd0500f93b19e18c356906cbed3d"
+                "reference": "a5b5c43e50b7fba655f793ad27303cd74c57363c"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/PHPMailer/PHPMailer/zipball/9256f12d8fb0cd0500f93b19e18c356906cbed3d",
-                "reference": "9256f12d8fb0cd0500f93b19e18c356906cbed3d",
+                "url": "https://api.github.com/repos/PHPMailer/PHPMailer/zipball/a5b5c43e50b7fba655f793ad27303cd74c57363c",
+                "reference": "a5b5c43e50b7fba655f793ad27303cd74c57363c",
                 "shasum": ""
             },
             "require": {
@@ -898,7 +898,7 @@
             "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/v6.4.1"
+                "source": "https://github.com/PHPMailer/PHPMailer/tree/v6.5.0"
             },
             "funding": [
                 {
@@ -906,7 +906,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2021-04-29T12:25:04+00:00"
+            "time": "2021-06-16T14:33:43+00:00"
         },
         {
             "name": "psr/http-client",
@@ -5957,5 +5957,5 @@
     "platform-overrides": {
         "php": "8.0"
     },
-    "plugin-api-version": "2.0.0"
+    "plugin-api-version": "2.1.0"
 }