Article 27

As from January 1st, 1936, any Member of the League of Nations or any non-Member State in regard to which the present Convention is then in force, may address to the Secretary-General of the League of Nations a request for the revision of any or all of the provisions of this Convention. If such a request, after being communicated to the other Members of the League and non-Member States in regard to which the Convention is then in force, is supported within one year by at least nine of them, the Council of the League of Nations shall decide, after consultation with the Members of the League of Nations and the non-Member States mentioned in Article 22, whether a conference should be specially convoked for that purpose or whether such revision should be considered at the next conference for the codification of international law.

The High Contracting Parties agree that, if the present Convention is revised, the revised Convention may provide that upon its entry into force some or all of the provisions of the present Convention shall be abrogated in respect of all of the Parties to the present Convention.