diff --git a/composer.json b/composer.json
index 90721dc..bd6622d 100644
--- a/composer.json
+++ b/composer.json
@@ -7,7 +7,7 @@
         }
     ],
     "require": {
-    	"phpmailer/phpmailer":"5.2.22",
+    	"phpmailer/phpmailer":"6.1.6",
     	"slim/slim":"2.0",
     	"rain/raintpl":"3.0.0"
     },
diff --git a/composer.lock b/composer.lock
index 8733259..602ba4b 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,57 +4,59 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "bf0ea5830de8333b26aa45eee1785a36",
+    "content-hash": "77b7ca1ccce50c75e2100629caef7863",
     "packages": [
         {
             "name": "phpmailer/phpmailer",
-            "version": "v5.2.22",
+            "version": "v6.1.6",
             "source": {
                 "type": "git",
                 "url": "https://github.com/PHPMailer/PHPMailer.git",
-                "reference": "b18cb98131bd83103ccb26a888fdfe3177b8a663"
+                "reference": "c2796cb1cb99d7717290b48c4e6f32cb6c60b7b3"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/PHPMailer/PHPMailer/zipball/b18cb98131bd83103ccb26a888fdfe3177b8a663",
-                "reference": "b18cb98131bd83103ccb26a888fdfe3177b8a663",
+                "url": "https://api.github.com/repos/PHPMailer/PHPMailer/zipball/c2796cb1cb99d7717290b48c4e6f32cb6c60b7b3",
+                "reference": "c2796cb1cb99d7717290b48c4e6f32cb6c60b7b3",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.0.0"
+                "ext-ctype": "*",
+                "ext-filter": "*",
+                "php": ">=5.5.0"
             },
             "require-dev": {
-                "phpdocumentor/phpdocumentor": "*",
-                "phpunit/phpunit": "4.7.*"
+                "doctrine/annotations": "^1.2",
+                "friendsofphp/php-cs-fixer": "^2.2",
+                "phpunit/phpunit": "^4.8 || ^5.7"
             },
             "suggest": {
-                "league/oauth2-google": "Needed for Google XOAUTH2 authentication"
+                "ext-mbstring": "Needed to send email in multibyte encoding charset",
+                "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)"
             },
             "type": "library",
             "autoload": {
-                "classmap": [
-                    "class.phpmailer.php",
-                    "class.phpmaileroauth.php",
-                    "class.phpmaileroauthgoogle.php",
-                    "class.smtp.php",
-                    "class.pop3.php",
-                    "extras/EasyPeasyICS.php",
-                    "extras/ntlm_sasl_client.php"
-                ]
+                "psr-4": {
+                    "PHPMailer\\PHPMailer\\": "src/"
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
-                "LGPL-2.1"
+                "LGPL-2.1-only"
             ],
             "authors": [
-                {
-                    "name": "Jim Jagielski",
-                    "email": "jimjag@gmail.com"
-                },
                 {
                     "name": "Marcus Bointon",
                     "email": "phpmailer@synchromedia.co.uk"
                 },
+                {
+                    "name": "Jim Jagielski",
+                    "email": "jimjag@gmail.com"
+                },
                 {
                     "name": "Andy Prevost",
                     "email": "codeworxtech@users.sourceforge.net"
@@ -64,7 +66,7 @@
                 }
             ],
             "description": "PHPMailer is a full-featured email creation and transfer class for PHP",
-            "time": "2017-01-09T09:33:47+00:00"
+            "time": "2020-05-27T12:24:03+00:00"
         },
         {
             "name": "rain/raintpl",