diff --git a/proto/viam/robot/v1/robot.proto b/proto/viam/robot/v1/robot.proto
index a06ef2191..595920c7e 100644
--- a/proto/viam/robot/v1/robot.proto
+++ b/proto/viam/robot/v1/robot.proto
@@ -127,10 +127,12 @@ service RobotService {
 message TunnelRequest {
   uint32 destination_port = 1;
   bytes data = 2;
+  map<string, google.protobuf.Any>  metadata = 3;
 }
 
 message TunnelResponse {
   bytes data = 1;
+  map<string, google.protobuf.Any>  metadata = 2;
 }
 
 message ListTunnelsRequest {}