diff --git a/erpnext/selling/page/point_of_sale/pos_controller.js b/erpnext/selling/page/point_of_sale/pos_controller.js
index f8daabe3066..24b72144d47 100644
--- a/erpnext/selling/page/point_of_sale/pos_controller.js
+++ b/erpnext/selling/page/point_of_sale/pos_controller.js
@@ -609,6 +609,14 @@ erpnext.PointOfSale.Controller = class {
 
 				if (this.is_current_item_being_edited(item_row) || from_selector) {
 					await frappe.model.set_value(item_row.doctype, item_row.name, field, value);
+					if (item.serial_no && from_selector) {
+						await frappe.model.set_value(
+							item_row.doctype,
+							item_row.name,
+							"serial_no",
+							item_row.serial_no + `\n${item.serial_no}`
+						);
+					}
 					this.update_cart_html(item_row);
 				}
 			} else {