diff --git a/proto/nearby_event_codes.proto b/proto/nearby_event_codes.proto
index 092fea71..7d7f7341 100644
--- a/proto/nearby_event_codes.proto
+++ b/proto/nearby_event_codes.proto
@@ -71,5 +71,6 @@ message NearbyEvent {
     BEFORE_CREATE_BOND_BONDED = 1390;
     BEFORE_CONNECT_PROFILE = 1400;
     HANDLE_PAIRING_REQUEST = 1410;
+    SECRET_HANDSHAKE_GATT_COMMUNICATION = 1420;
   }
 }