From the 4th June 2022: Indonesia will now be able to certify documents with an Apostille (and also accept such documents). It is paramount for a country to be part of this Convention as it increases commerce and investments.

Source: https://www.hcch.net/en/news-archive/details/?varevent=825

Notable countries still not part of the Convention:

• Canada
• China
• Egypt
• Jordan
• Madagascar
• Malaysia
• Nigeria
• Pakistan
• Saudi Arabia
• Sri Lanka
• Thailand
• United Arab Emirates

Maybe Indonesia will lead the way to new countries?