diff --git a/config b/config
index c775a3c1..ba53ef3e 100644
--- a/config
+++ b/config
@@ -125,6 +125,9 @@
 # Value: tls | starttls | none
 #imap_security = tls
 
+# OAuth2 token endpoint URL
+#oauth2_token_endpoint = <URL>
+
 # Htpasswd filename
 #htpasswd_filename = /etc/radicale/users