diff --git a/cellframenet.py b/cellframenet.py
index 0c46ffdf839d03fa0165b8ff9bd62638c46ebede..f97579b482b35e6e894d4fc684100dfb1d34da80 100644
--- a/cellframenet.py
+++ b/cellframenet.py
@@ -5,7 +5,7 @@ from DAP import Crypto
 from DAP.Crypto import Cert, Sign
 from CellFrame.Chain import Mempool
 from CellFrame.Consensus import DAG,Block
-from CellFrame.Common import Datum, DatumTx, TxOut, TxIn, TxToken, TxSig, TxOutCondSubtypeSrvStakeLock, TxInCond
+from CellFrame.Common import Datum, DatumTx, TxOut, TxIn, TxToken, TxSig, TxOutCondSubtypeSrvStakeLock, TxInCond,TxOutExt
 from DAP.Crypto import HashFast
 from DAP.Core import logIt
 from datetime import datetime