diff --git a/erpnext/controllers/stock_controller.py b/erpnext/controllers/stock_controller.py
index 57b4ddd..b10d8be 100644
--- a/erpnext/controllers/stock_controller.py
+++ b/erpnext/controllers/stock_controller.py
@@ -429,7 +429,7 @@
 	for d in frappe.db.sql("""select distinct sle.voucher_type, sle.voucher_no
 		from `tabStock Ledger Entry` sle
 		where timestamp(sle.posting_date, sle.posting_time) >= timestamp(%s, %s) {condition}
-		order by timestamp(sle.posting_date, sle.posting_time) asc, creation asc""".format(condition=condition),
+		order by timestamp(sle.posting_date, sle.posting_time) asc, creation asc for update""".format(condition=condition),
 		tuple([posting_date, posting_time] + values), as_dict=True):
 			future_stock_vouchers.append([d.voucher_type, d.voucher_no])