diff --git a/frappe/api.py b/frappe/api.py
index 36d51e894c..636c6b2888 100644
--- a/frappe/api.py
+++ b/frappe/api.py
@@ -82,7 +82,7 @@ def handle():
 				if frappe.local.request.method=="PUT":
 					data = get_request_form_data()
 
-					doc = frappe.get_doc(doctype, name)
+					doc = frappe.get_doc(doctype, name, for_update=True)
 
 					if "flags" in data:
 						del data["flags"]