diff --git a/core/Tron.proto b/core/Tron.proto
index 87a0b6ca70b..d998c71898b 100644
--- a/core/Tron.proto
+++ b/core/Tron.proto
@@ -202,6 +202,13 @@ enum ReasonCode {
   USER_REASON = 0x10;
   RESET = 0x11;
   SYNC_FAIL = 0x12;
+  TIME_OUT = 0x13;
+  BAD_TX = 0x14;
+  BAD_BLOCK = 0x15;
+  FORKED = 0x16;
+  UNLINKABLE = 0x17;
+  INCOMPATIBLE_VERSION = 0x18;
+  INCOMPATIBLE_CHAIN = 0x19;
   UNKNOWN = 0xFF;
 }