diff --git a/backend/composer.lock b/backend/composer.lock
index 1ca9bf0..089f29c 100644
--- a/backend/composer.lock
+++ b/backend/composer.lock
@@ -393,16 +393,16 @@
         },
         {
             "name": "phpmailer/phpmailer",
-            "version": "v6.6.3",
+            "version": "v6.8.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/PHPMailer/PHPMailer.git",
-                "reference": "9400f305a898f194caff5521f64e5dfa926626f3"
+                "reference": "df16b615e371d81fb79e506277faea67a1be18f1"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/PHPMailer/PHPMailer/zipball/9400f305a898f194caff5521f64e5dfa926626f3",
-                "reference": "9400f305a898f194caff5521f64e5dfa926626f3",
+                "url": "https://api.github.com/repos/PHPMailer/PHPMailer/zipball/df16b615e371d81fb79e506277faea67a1be18f1",
+                "reference": "df16b615e371d81fb79e506277faea67a1be18f1",
                 "shasum": ""
             },
             "require": {
@@ -412,22 +412,24 @@
                 "php": ">=5.5.0"
             },
             "require-dev": {
-                "dealerdirect/phpcodesniffer-composer-installer": "^0.7.0",
-                "doctrine/annotations": "^1.2",
+                "dealerdirect/phpcodesniffer-composer-installer": "^0.7.2",
+                "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": "^3.6.2",
-                "yoast/phpunit-polyfills": "^1.0.0"
+                "squizlabs/php_codesniffer": "^3.7.1",
+                "yoast/phpunit-polyfills": "^1.0.4"
             },
             "suggest": {
                 "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",
                 "hayageek/oauth2-yahoo": "Needed for Yahoo XOAUTH2 authentication",
                 "league/oauth2-google": "Needed for Google XOAUTH2 authentication",
                 "psr/log": "For optional PSR-3 debug logging",
-                "stevenmaguire/oauth2-microsoft": "Needed for Microsoft XOAUTH2 authentication",
-                "symfony/polyfill-mbstring": "To support UTF-8 if the Mbstring PHP extension is not enabled (^1.2)"
+                "symfony/polyfill-mbstring": "To support UTF-8 if the Mbstring PHP extension is not enabled (^1.2)",
+                "thenetworg/oauth2-azure": "Needed for Microsoft XOAUTH2 authentication"
             },
             "type": "library",
             "autoload": {
@@ -459,7 +461,7 @@
             "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/v6.6.3"
+                "source": "https://github.com/PHPMailer/PHPMailer/tree/v6.8.0"
             },
             "funding": [
                 {
@@ -467,7 +469,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2022-06-20T09:21:02+00:00"
+            "time": "2023-03-06T14:43:22+00:00"
         },
         {
             "name": "psr/http-client",