diff --git a/models.proto b/models.proto
index b1265bd..c3f53a1 100644
--- a/models.proto
+++ b/models.proto
@@ -143,6 +143,7 @@ message Role {
   int32 lucky_seek = 33; // lucky black cat seek
   bool del = 34;
   int32 copies_num = 35;
+  int32 battle_carbon = 36;
 }
 
 message Activity {
--
libgit2 0.21.2