Version 1.0 of the Open Contracting Data Standard (OCDS) was launched in 2014. It is now used in over 15 countries, and is supported by an increasing number of tools.

Version 1.1 was released in May 2017 including a number of updates based on feedback and requests from early adopters. This update took place through the OCDS governance process, with a year-long period of drafting and consultation.

This document provides an overview of the improvements and recommendations for publishers upgrading to Version 1.1.