diff --git a/notify.md b/notify.md
index 22d88af..ca103de 100644
--- a/notify.md
+++ b/notify.md
@@ -725,11 +725,12 @@ acme.sh --set-notify --notify-hook mattermost
 
 ## 25. Set notification for ntfy
 
-Make sure to change `NTFY_TOPIC` to something that cannot be guessed easily.
+Make sure to change `NTFY_TOPIC` to something that cannot be guessed easily. `NTFY_TOKEN` is optional.
 
 ```sh
 export NTFY_URL="https://ntfy.sh"
 export NTFY_TOPIC="xxxxxxxxxxxxx"
+export NTFY_TOKEN="xxxxxxxxxxxxx"
 
 acme.sh --set-notify --notify-hook ntfy
 ```