diff --git a/specification/_global/delete_by_query/DeleteByQueryRequest.ts b/specification/_global/delete_by_query/DeleteByQueryRequest.ts
index 7d21c9abfe..33787dd7b6 100644
--- a/specification/_global/delete_by_query/DeleteByQueryRequest.ts
+++ b/specification/_global/delete_by_query/DeleteByQueryRequest.ts
@@ -258,6 +258,7 @@ export interface Request extends RequestBase {
     slices?: Slices
     /**
      * A comma-separated list of `<field>:<direction>` pairs.
+     * @deprecated 9.0.0 this query parameter is not supported and will be removed
      */
     sort?: string[]
     /**