diff --git a/README.md b/README.md
index ebcefc895..cc201787d 100644
--- a/README.md
+++ b/README.md
@@ -27,6 +27,7 @@ addon | version | summary
 [mail_tracking](mail_tracking/) | 13.0.1.0.4 | Email tracking system for all mails sent
 [mail_tracking_mailgun](mail_tracking_mailgun/) | 13.0.1.0.0 | Mail tracking and Mailgun webhooks integration
 [mail_tracking_mass_mailing](mail_tracking_mass_mailing/) | 13.0.1.0.0 | Improve mass mailing email tracking
+[mass_mailing_custom_unsubscribe](mass_mailing_custom_unsubscribe/) | 13.0.1.0.0 | Know and track (un)subscription reasons, GDPR compliant
 [mass_mailing_list_dynamic](mass_mailing_list_dynamic/) | 13.0.1.0.0 | Mass mailing lists that get autopopulated
 [mass_mailing_partner](mass_mailing_partner/) | 13.0.1.0.1 | Link partners with mass-mailing
 [mass_mailing_resend](mass_mailing_resend/) | 13.0.1.0.0 | Resend mass mailings