diff --git a/google/api/servicecontrol/v1/service_controller.proto b/google/api/servicecontrol/v1/service_controller.proto
index 6e11bcf0..38f53ca0 100644
--- a/google/api/servicecontrol/v1/service_controller.proto
+++ b/google/api/servicecontrol/v1/service_controller.proto
@@ -117,6 +117,9 @@ message CheckResponse {
   // and diagnostics purposes.
   string operation_id = 1;
 
+  // The current service rollout id used to process the request.
+  string service_rollout_id = 11;
+
   // Indicate the decision of the check.
   //
   // If no check errors are present, the service should process the operation.
@@ -195,4 +198,7 @@ message ReportResponse {
 
   // The actual config id used to process the request.
   string service_config_id = 2;
+
+  // The current service rollout id used to process the request.
+  string service_rollout_id = 4;
 }