diff --git a/docs/authentication.md b/docs/authentication.md
index 4e547837c..dc327d251 100644
--- a/docs/authentication.md
+++ b/docs/authentication.md
@@ -24,6 +24,7 @@ There are two ways to provide MFA code to `icloudpd`:
 The choice can be made with `--mfa-provider` parameter.
 
 Default: *console*
+Other options: *webui*
 
 ## Access from Mainland China