diff --git a/role.proto b/role.proto
index 6cc551e..3151b04 100644
--- a/role.proto
+++ b/role.proto
@@ -288,6 +288,7 @@ message RoleActivityCarbonStartRsp {
 }
 
 message RoleActivityCarbonEndReq {
+  int32 carbon_id = 1;
 }
 
 message RoleActivityCarbonEndRsp {
--
libgit2 0.21.2