diff --git a/ARCHITECTURE.md b/ARCHITECTURE.md
index 3022b048..3ecebd6f 100644
--- a/ARCHITECTURE.md
+++ b/ARCHITECTURE.md
@@ -98,6 +98,7 @@ stateDiagram
     tlsWorker --> ccDown: chan *TLSRecord
     relUp --> pmDown: chan *model.Packet [ACK]
     [*] --> tunWrite
+    tlsWorker --> dcUp: chan *DataChannelKey
 
     nioDown --> internet: conn.Write() [!!!]
     internet --> nioUp: conn.Read() [!!!]