The OpenBSD project produces a free, multi-platform 4.4BSD-based UNIX-like operating system. Portability, standardization, correctness, proactive security and integrated cryptography are emphasized.

Release Released Security Support
7.5 2 weeks ago
(05 Apr 2024)
Ends in 1 year
(01 May 2025)
7.4 6 months ago
(16 Oct 2023)
Ends in 6 months
(01 Nov 2024)
7.3 1 year ago
(10 Apr 2023)
Ended 2 weeks ago
(05 Apr 2024)
7.2 1 year and 6 months ago
(20 Oct 2022)
Ended 6 months ago
(16 Oct 2023)
7.1 1 year and 12 months ago
(21 Apr 2022)
Ended 1 year ago
(10 Apr 2023)
7.0 2 years and 6 months ago
(14 Oct 2021)
Ended 1 year and 6 months ago
(20 Oct 2022)
6.9 2 years and 11 months ago
(01 May 2021)
Ended 1 year and 12 months ago
(21 Apr 2022)
6.8 3 years and 6 months ago
(18 Oct 2020)
Ended 2 years and 6 months ago
(14 Oct 2021)
6.7 3 years and 11 months ago
(19 May 2020)
Ended 2 years and 11 months ago
(01 May 2021)
6.6 4 years and 6 months ago
(17 Oct 2019)
Ended 3 years and 6 months ago
(18 Oct 2020)
6.5 4 years and 12 months ago
(24 Apr 2019)
Ended 3 years and 11 months ago
(19 May 2020)
6.4 5 years ago
(18 Oct 2018)
Ended 4 years and 6 months ago
(17 Oct 2019)
6.3 6 years ago
(02 Apr 2018)
Ended 4 years and 11 months ago
(03 May 2019)
6.2 6 years ago
(09 Oct 2017)
Ended 5 years ago
(18 Oct 2018)
6.1 7 years ago
(11 Apr 2017)
Ended 6 years ago
(15 Apr 2018)
6.0 7 years ago
(01 Sep 2016)
Ended 6 years ago
(09 Oct 2017)
5.9 8 years ago
(29 Mar 2016)
Ended 7 years ago
(11 Apr 2017)
5.8 8 years ago
(18 Oct 2015)
Ended 7 years ago
(01 Sep 2016)
5.7 8 years and 11 months ago
(01 May 2015)
Ended 8 years ago
(29 Mar 2016)
5.6 9 years ago
(01 Nov 2014)
Ended 8 years ago
(18 Oct 2015)
5.5 9 years ago
(01 May 2014)
Ended 8 years and 11 months ago
(01 May 2015)
5.4 10 years ago
(01 Nov 2013)
Ended 9 years ago
(01 Nov 2014)
5.3 10 years ago
(01 May 2013)
Ended 9 years ago
(01 May 2014)
5.2 11 years ago
(01 Nov 2012)
Ended 10 years ago
(01 Nov 2013)
5.1 11 years ago
(01 May 2012)
Ended 10 years ago
(01 May 2013)
5.0 12 years ago
(01 Nov 2011)
Ended 11 years ago
(01 Nov 2012)
4.9 12 years ago
(01 May 2011)
Ended 11 years ago
(01 May 2012)
4.8 13 years ago
(01 Nov 2010)
Ended 12 years ago
(01 Nov 2011)
4.7 13 years ago
(19 May 2010)
Ended 12 years ago
(01 May 2011)
4.6 14 years ago
(18 Oct 2009)
Ended 13 years ago
(01 Nov 2010)
4.5 14 years ago
(01 May 2009)
Ended 13 years ago
(19 May 2010)
4.4 15 years ago
(01 Nov 2008)
Ended 14 years ago
(18 Oct 2009)
4.3 15 years ago
(01 May 2008)
Ended 14 years ago
(01 May 2009)
4.2 16 years ago
(01 Nov 2007)
Ended 15 years ago
(01 Nov 2008)
4.1 16 years ago
(01 May 2007)
Ended 15 years ago
(01 May 2008)
4.0 17 years ago
(01 Nov 2006)
Ended 16 years ago
(01 Nov 2007)
3.9 17 years ago
(01 May 2006)
Ended 16 years ago
(01 May 2007)
3.8 18 years ago
(01 Nov 2005)
Ended 17 years ago
(01 Nov 2006)
3.7 18 years ago
(19 May 2005)
Ended 17 years ago
(01 May 2006)
3.6 19 years ago
(01 Nov 2004)
Ended 18 years ago
(01 Nov 2005)
3.5 19 years ago
(01 May 2004)
Ended 18 years ago
(19 May 2005)
3.4 20 years ago
(01 Nov 2003)
Ended 19 years ago
(01 Nov 2004)
3.3 20 years ago
(01 May 2003)
Ended 19 years ago
(01 May 2004)
3.2 21 years ago
(01 Nov 2002)
Ended 20 years ago
(01 Nov 2003)
3.1 21 years ago
(19 May 2002)
Ended 20 years ago
(01 May 2003)
3.0 22 years ago
(01 Dec 2001)
Ended 21 years ago
(01 Nov 2002)
2.9 22 years ago
(01 Jun 2001)
Ended 21 years ago
(19 May 2002)
2.8 23 years ago
(01 Dec 2000)
Ended 22 years ago
(01 Dec 2001)
2.7 23 years ago
(15 Jun 2000)
Ended 22 years ago
(01 Jun 2001)
2.6 24 years ago
(01 Dec 1999)
Ended 23 years ago
(01 Dec 2000)
2.5 24 years ago
(19 May 1999)
Ended 23 years ago
(15 Jun 2000)
2.4 25 years ago
(01 Dec 1998)
Ended 24 years ago
(01 Dec 1999)
2.3 25 years ago
(19 May 1998)
Ended 24 years ago
(19 May 1999)
2.2 26 years ago
(01 Dec 1997)
Ended 25 years ago
(01 Dec 1998)
2.1 26 years ago
(01 Jun 1997)
Ended 25 years ago
(19 May 1998)

OpenBSD has a new release every six months. Only the two most recent releases receive security and reliability fixes for the base system.

Release Flavors

  • -release: The version of OpenBSD shipped every six months.
  • -current: The development branch. Every six months, -current is tagged and becomes the next -release.
  • -stable: The -release branch, plus patches found on the OpenBSD errata page. Very important fixes are backported to the supported -stable branches.

OpenBSD publishes announcements and security advisories on the announcements mailing list. There’s an RSS feed for errata as well.

You can check the version that you are currently using by running:
uname -r

You can submit an improvement to this page on GitHub :octocat: . This page has a corresponding Talk Page.

A JSON version of this page is available at /api/openbsd.json. See the API Documentation for more information. You can subscribe to the iCalendar feed at /calendar/openbsd.ics.