The push for transparency in investor-state arbitration is gaining momentum. In July 2013 the United Nations Commission on International Trade Law adopted the UNCITRAL Rules on Transparency in Treaty-based Investor-State Arbitration. In December 2014 the General Assembly adopted the United Nations Convention on Transparency in Treaty-based Investor-State Arbitration (Mauritius Convention on Transparency), providing a streamlined mechanism for States to adopt the Rules on Transparency. These developments are part of a welcomed trend towards transparency in investor-state.