diff --git a/attributs.py b/attributs.py
index f6f7b97..912fccd 100644
--- a/attributs.py
+++ b/attributs.py
@@ -1637,6 +1637,7 @@ class cn(Attr):
     __slots__ = ()
     singlevalue = True
     optional = False
+    can_modify = [cableur, nounou]
     category = 'id'
     ldap_name = "cn"