diff --git a/dao/deposit.go b/dao/deposit.go
index e59f12c..6a00795 100644
--- a/dao/deposit.go
+++ b/dao/deposit.go
@@ -111,6 +111,7 @@ func DepositUpdate(ctx context.Context, i *models.DepositUpdate, token *vcapool.
 		return
 	}
 
+	ctx = context.Background()
 	if i.Status == "confirmed" {
 		go func() {
 
@@ -193,7 +194,7 @@ func DepositSync(ctx context.Context, i *models.DepositParam, token *vcapool.Acc
 	if result.Status != "confirmed" {
 		return nil, vcago.NewBadRequest("deposit", "deposit_confirmed_failure", nil)
 	}
-
+	ctx = context.Background()
 	go func() {
 		for _, unit := range result.DepositUnit {
 			event := new(models.EventUpdate)