diff --git a/docs/rolereference.rst b/docs/rolereference.rst
index 19680e306d9cb0683b0f2c845762e7a00a5b1bcc..c614e686157d7a6b62785ed9e140008c57a82d85 100644
--- a/docs/rolereference.rst
+++ b/docs/rolereference.rst
@@ -1118,7 +1118,7 @@ Parameters
   ``smtpd_tls_mandatory_protocols`` and Dovecot configuration option
   ``ssl_protocols``.
 
-**mail_server_tls_ciphers** (string, optional ``DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES128-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA384:!aNULL:!MD5:!EXPORT``)
+**mail_server_tls_ciphers** (string, optional ``DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-CHACHA20-POLY1305:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-CHACHA20-POLY1305:!aNULL:!MD5:!EXPORT``)
   TLS ciphers to enable on the mail server (for IMAP and SMTP submission). This
   should be an OpenSSL-compatible cipher specification. Value should be
   compatible with Postfix configuration option ``tls_high_cipherlist`` and