don't update the modified of the item price
diff --git a/erpnext/stock/doctype/item/item.py b/erpnext/stock/doctype/item/item.py
index 203458e..effbe82 100644
--- a/erpnext/stock/doctype/item/item.py
+++ b/erpnext/stock/doctype/item/item.py
@@ -501,7 +501,7 @@
 
 	def update_item_price(self):
 		frappe.db.sql("""update `tabItem Price` set item_name=%s,
-			item_description=%s, modified=NOW() where item_code=%s""",
+			item_description=%s where item_code=%s""",
 			(self.item_name, self.description, self.name))
 
 	def on_trash(self):