diff --git a/composer.lock b/composer.lock
index c2bac7d..16186d5 100644
--- a/composer.lock
+++ b/composer.lock
@@ -8,16 +8,16 @@
     "packages": [
         {
             "name": "phpmailer/phpmailer",
-            "version": "v6.3.0",
+            "version": "v6.4.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/PHPMailer/PHPMailer.git",
-                "reference": "4a08cf4cdd2c38d12ee2b9fa69e5d235f37a6dcb"
+                "reference": "9256f12d8fb0cd0500f93b19e18c356906cbed3d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/PHPMailer/PHPMailer/zipball/4a08cf4cdd2c38d12ee2b9fa69e5d235f37a6dcb",
-                "reference": "4a08cf4cdd2c38d12ee2b9fa69e5d235f37a6dcb",
+                "url": "https://api.github.com/repos/PHPMailer/PHPMailer/zipball/9256f12d8fb0cd0500f93b19e18c356906cbed3d",
+                "reference": "9256f12d8fb0cd0500f93b19e18c356906cbed3d",
                 "shasum": ""
             },
             "require": {
@@ -35,7 +35,7 @@
                 "yoast/phpunit-polyfills": "^0.2.0"
             },
             "suggest": {
-                "ext-mbstring": "Needed to send email in multibyte encoding charset",
+                "ext-mbstring": "Needed to send email in multibyte encoding charset or decode encoded addresses",
                 "hayageek/oauth2-yahoo": "Needed for Yahoo XOAUTH2 authentication",
                 "league/oauth2-google": "Needed for Google XOAUTH2 authentication",
                 "psr/log": "For optional PSR-3 debug logging",
@@ -76,7 +76,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2021-02-19T15:28:08+00:00"
+            "time": "2021-04-29T12:25:04+00:00"
         }
     ],
     "packages-dev": [],