Amendments were issued on:

• November 1999
• July 2000
• September 2001
• September 2003
• October 2004
• May 2005
• September 2005
• May 2007
• July 2007
• June 2008
• April 2009
• March 2011
• February 2013
• June 2014
• November 2017
• May 2020
• September 2021
• October 2021
• 1 July 2022
• 19 December 2022 (Current version)

The GTA Dispute Resolution Rules in force at the date that GTA is requested to commence an arbitration are those that apply, unless otherwise agreed by the Parties.

PDF copies of previously issued Dispute Resolution Rules are available on request from GTA.