diff --git a/mylib/ldap.py b/mylib/ldap.py
index 924252f..fbdd0ca 100644
--- a/mylib/ldap.py
+++ b/mylib/ldap.py
@@ -850,7 +850,7 @@ class LdapClient:
             )
             return False
 
-    def update_object(self, ldap_obj, changes, protected_attrs=None, rdn_attr=None):
+    def update_object(self, ldap_obj, changes, protected_attrs=None, rdn_attr=None, relax=False):
         """
         Update an object
 
@@ -858,6 +858,7 @@ class LdapClient:
         :param changes: The changes to make on LDAP object (as formated by get_changes() method)
         :param protected_attrs: An optional list of protected attributes
         :param rdn_attr: The LDAP object RDN attribute (to detect renaming, default: auto-detected)
+        :param rdn_attr: Enable relax modification server control (optional, default: false)
         """
         assert (
             isinstance(changes, (list, tuple))
@@ -922,7 +923,7 @@ class LdapClient:
                 return True
             assert self._conn or self.initialize()
             return self._conn.update_object(
-                ldap_obj["dn"], _changes[0], _changes[1], ignore_attrs=protected_attrs
+                ldap_obj["dn"], _changes[0], _changes[1], ignore_attrs=protected_attrs, relax=relax
             )
         except LdapServerException:
             log.error(