diff --git a/src/tcp/tcp_conn.rs b/src/tcp/tcp_conn.rs
index 3d8439c..26962d4 100755
--- a/src/tcp/tcp_conn.rs
+++ b/src/tcp/tcp_conn.rs
@@ -52,11 +52,13 @@ async fn handle_tcp_message(msg: SdlanTcp) {
                     should_exit: false,
                 },
             );
+
             let Ok(ack) = SdlRegisterSuperAck::decode(&msg.current_packet[..]) else {
                 error!("failed to decode REGISTER_SUPER_ACK");
                 return;
             };
             debug!("got register super ack: {:?}", ack);
+            edge.session_token.set(ack.session_token);
             let Ok(aes) = rsa_decrypt(&edge.rsa_private, &ack.aes_key) else {
                 error!("failed to rsa decrypt aes key");
                 return;