Article 108 United Nations Charter
Article 108 of the United Nations Charter is under Chapter XVIII: Amendments
Article 108
Amendments to the present Charter shall come into force for all Members of the United Nations when they have been adopted by a vote of two thirds of the members of the General Assembly and ratified in accordance with their respective constitutional processes by two thirds of the Members of the United Nations, including all the permanent members of the Security Council.
See also: Article 107 United Nations Charter