diff --git a/protobuf/message.proto b/protobuf/message.proto
index 394ea44..f141cbb 100644
--- a/protobuf/message.proto
+++ b/protobuf/message.proto
@@ -18,7 +18,6 @@ message Message {
     bytes body = 2;
     bytes previous_message = 3;
     bytes signature = 4;
-    int64 sequence = 5;
 }