diff --git a/README.md b/README.md
index 299d298..2ed6775 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,8 @@
 # Typesense Relay for AMB Metadata
 
+Based on the [khatru](https://github.com/fiatjaf/khatru) relay.
+
 - copy `.env.example` to `.env`
 - add metadata to your relay and typesense connection info
 - start typesense with `docker compose up`
 - start relay with `go run .`
-