diff --git a/composer.lock b/composer.lock
index fcf3324e..70fb0563 100644
--- a/composer.lock
+++ b/composer.lock
@@ -56,16 +56,16 @@
         },
         {
             "name": "phpmailer/phpmailer",
-            "version": "v6.8.0",
+            "version": "v6.9.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/PHPMailer/PHPMailer.git",
-                "reference": "df16b615e371d81fb79e506277faea67a1be18f1"
+                "reference": "039de174cd9c17a8389754d3b877a2ed22743e18"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/PHPMailer/PHPMailer/zipball/df16b615e371d81fb79e506277faea67a1be18f1",
-                "reference": "df16b615e371d81fb79e506277faea67a1be18f1",
+                "url": "https://api.github.com/repos/PHPMailer/PHPMailer/zipball/039de174cd9c17a8389754d3b877a2ed22743e18",
+                "reference": "039de174cd9c17a8389754d3b877a2ed22743e18",
                 "shasum": ""
             },
             "require": {
@@ -75,16 +75,17 @@
                 "php": ">=5.5.0"
             },
             "require-dev": {
-                "dealerdirect/phpcodesniffer-composer-installer": "^0.7.2",
+                "dealerdirect/phpcodesniffer-composer-installer": "^1.0",
                 "doctrine/annotations": "^1.2.6 || ^1.13.3",
                 "php-parallel-lint/php-console-highlighter": "^1.0.0",
                 "php-parallel-lint/php-parallel-lint": "^1.3.2",
                 "phpcompatibility/php-compatibility": "^9.3.5",
                 "roave/security-advisories": "dev-latest",
-                "squizlabs/php_codesniffer": "^3.7.1",
+                "squizlabs/php_codesniffer": "^3.7.2",
                 "yoast/phpunit-polyfills": "^1.0.4"
             },
             "suggest": {
+                "decomplexity/SendOauth2": "Adapter for using XOAUTH2 authentication",
                 "ext-mbstring": "Needed to send email in multibyte encoding charset or decode encoded addresses",
                 "ext-openssl": "Needed for secure SMTP sending and DKIM signing",
                 "greew/oauth2-azure-provider": "Needed for Microsoft Azure XOAUTH2 authentication",
@@ -124,7 +125,7 @@
             "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/v6.8.0"
+                "source": "https://github.com/PHPMailer/PHPMailer/tree/v6.9.1"
             },
             "funding": [
                 {
@@ -132,7 +133,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2023-03-06T14:43:22+00:00"
+            "time": "2023-11-25T22:23:28+00:00"
         }
     ],
     "packages-dev": [
@@ -3469,5 +3470,5 @@
     "prefer-lowest": false,
     "platform": [],
     "platform-dev": [],
-    "plugin-api-version": "2.3.0"
+    "plugin-api-version": "2.6.0"
 }