diff --git a/guide/asynchronous.md b/guide/asynchronous.md
index a8c561a5..09d76689 100644
--- a/guide/asynchronous.md
+++ b/guide/asynchronous.md
@@ -24,9 +24,11 @@ As of [PR #131](https://github.com/openfaas/faas/pull/131) asynchronous invocati
Here is a conceptual diagram
-
+
-* [queue-worker](https://github.com/open-faas/nats-queue-worker)
+You can also use asynchronous calls with a callback URL
+
+
## Deploy the async stack