diff --git a/composer.json b/composer.json
index d84fdde..fe427fd 100644
--- a/composer.json
+++ b/composer.json
@@ -5,7 +5,7 @@
     "license": "Apache 2.0",
     "require": {
         "league/commonmark": "0.18.2", 
-        "phpmailer/phpmailer": "6.4.1",
+        "phpmailer/phpmailer": "6.5.0",
         "dompdf/dompdf": "1.2"
     }
 }
diff --git a/composer.lock b/composer.lock
index fe4967f..cbfe36b 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": "eba49990c2c9d490a1a65bd7786ae4f4",
+    "content-hash": "b3a122f66c41e93c9bb4330988873b49",
     "packages": [
         {
             "name": "dompdf/dompdf",
@@ -240,16 +240,16 @@
         },
         {
             "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": {
@@ -304,7 +304,7 @@
             "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": [
                 {
@@ -312,7 +312,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2021-04-29T12:25:04+00:00"
+            "time": "2021-06-16T14:33:43+00:00"
         },
         {
             "name": "sabberworm/php-css-parser",
@@ -376,5 +376,5 @@
     "prefer-lowest": false,
     "platform": [],
     "platform-dev": [],
-    "plugin-api-version": "2.2.0"
+    "plugin-api-version": "2.6.0"
 }