diff --git a/docs/sources/http_api/annotations.md b/docs/sources/http_api/annotations.md
index e1d2876f48a..496e9497a55 100644
--- a/docs/sources/http_api/annotations.md
+++ b/docs/sources/http_api/annotations.md
@@ -195,6 +195,7 @@ Content-Type: application/json
 ```
 
 ## Patch Annotation
+> This is available in Grafana 6.0.0-beta2 and above.
 
 `PATCH /api/annotations/:id`