diff --git a/FAQ.md b/FAQ.md
index 3862fb8..3398da6 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -508,7 +508,12 @@ You need to log in to the RustDesk client first to access address books and perm
 
 https://community.teamviewer.com/English/discussion/10470/the-maximum-number-of-your-concurrent-teamviewer-sessions-has-been-reached
 
-
+# Proxy for `Pro` server
+
+Add proxy support for license verification (also apply to [custom client generator and oidc](https://github.com/rustdesk/rustdesk-server-pro/discussions/301)) in case you can not access internet directly
+e.g. `proxy=http://username:password@example.com:8080 ./hbbs`
+you can also add `proxy=http://username:password@example.com:8080` to .env file
+under working directory (where you can see `id_ed25519 / db.sqlite3` files)