diff --git a/services.proto b/services.proto
index 16a5809..9f3447c 100644
--- a/services.proto
+++ b/services.proto
@@ -88,6 +88,10 @@ service QueryService {
   // A streamed response interface when lower latency is absolutely critical.
   rpc StreamQuery(com.vectara.serving.BatchQueryRequest)
       returns (stream com.vectara.serving.QueryResponsePart) {
+    option (google.api.http) = {
+      post: "/v1/stream-query"
+      body: "*"
+    };
   }
 }