diff --git a/OAuth2.md b/OAuth2.md
index 0313725..f34ae83 100644
--- a/OAuth2.md
+++ b/OAuth2.md
@@ -39,6 +39,8 @@ The redirect URL is described in the wekan wiki: https://wekan.example.com/_oaut
 
 ## Rocket.Chat providing OAuth2 login to Wekan
 
+- [RocketChat Webhook workaround](https://github.com/wekan/univention/issues/15)
+
 Also, if you have Rocket.Chat using LDAP/SAML/Google/etc for logging into Rocket.Chat, then same users can login to Wekan when Rocket.Chat is providing OAuth2 login to Wekan.
 
 If there is existing username/password account in Wekan, OAuth2 merges both logins.