NB As of 2025-06-09 the wiki is archived and these pages are no longer actively maintained. Please see https://github.com/quicwg/quicwg.github.io for a better source of ancilliary information to form QUIC WG documents.

This page is meant to record the draft versions which are in general use on the internet. Please indicate any helpful additional information -- do users need to activate a special flag to use QUIC? are there sunset dates for versions? etc.

Version 3.0: h3-27, h3-29

h3-27, h3-29

h3-29

Version 15.1: h3-28 and h3-29 (h3-29/h3-32 expected in January)

Version 16.0: h3-27 and h3-28 (h3-28/h3-29 expected in January)

Customers that have not performed recommended maintenance upgrades may be operating h3-24 or h3-25.

• 6.0.x: h3-27, h3-29, h3-32
• 5.4.x: h3-27, h3-29
• 5.3.x: h3-25, h3-27

• 1.8.x: h3-27, h3-29, h3-32
• 1.7.x: h3-27, h3-29
• 1.6.x: h3-25, h3-27

h3-29

h3-27, h3-29