It is disclosed an originating node (22), a router node (24) and a source node (26), and methods therein for allowing updates of information objects in Information centric networking (ICN). By introducing a field in a request for an update of an information update, where the field comprises validity aspects specifying conditions for which the request is valid, a single request may be treated as a request for a subscription of updates of an information object, and several updates may be communicated as responses to the single request. It is an advantage that these updates may be communicated to a large number of request originating nodes.