diff --git a/erpnext/buying/doctype/purchase_order/purchase_order.py b/erpnext/buying/doctype/purchase_order/purchase_order.py
index 4efbb27..656ee9b 100644
--- a/erpnext/buying/doctype/purchase_order/purchase_order.py
+++ b/erpnext/buying/doctype/purchase_order/purchase_order.py
@@ -457,6 +457,7 @@
 		self.update_ordered_qty()
 		self.update_reserved_qty_for_subcontract()
 		self.update_subcontracting_order_status()
+		self.update_blanket_order()
 		self.notify_update()
 		clear_doctype_notifications(self)