diff --git a/app/observatory/command/command.proto b/app/observatory/command/command.proto
index 74c71269a..70cd681e0 100644
--- a/app/observatory/command/command.proto
+++ b/app/observatory/command/command.proto
@@ -9,6 +9,7 @@ option java_multiple_files = true;
 import "app/observatory/config.proto";
 
 message GetOutboundStatusRequest {
+  string Tag = 1;
 }
 
 message GetOutboundStatusResponse {