Download Debian 9.9(64-bit PC Network installer)


Debian is a free operating system (OS) for your computer. An operating system is the set of basic programs and utilities that make your computer run.

Debian provides more than a pure OS: it comes with over 51000 packages, precompiled software bundled up in a nice format for easy installation on your machine. Read more...

The latest stable release of Debian is 9.9. The last update to this release was made on April 27th, 2019. Read more about available versions of Debian.

Getting Started

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In addition, users that speak languages other than English may check the international section, and, people who use systems other than Intel x86 should check the ports section.


[27 Apr 2019] Updated Debian 9: 9.9 released
[31 Mar 2019] The Debian Project mourns the loss of Innocent de Marchi
[29 Mar 2019] Handshake donates $300,000 USD to Debian
[08 Mar 2019] The Debian Project mourns the loss of Lucy Wayland
[16 Feb 2019] Updated Debian 9: 9.8 released
[23 Jan 2019] Updated Debian 9: 9.7 released

For older news items see the News Page. If you would like to receive mail whenever new Debian news comes out, subscribe to the debian-announce mailing list.

Security Advisories

[15 May 2019] DSA-4447 intel-microcode - security update
[14 May 2019] DSA-4446 lemonldap-ng - security update
[14 May 2019] DSA-4445 drupal7 - security update
[14 May 2019] DSA-4444 linux - security update
[14 May 2019] DSA-4443 samba - security update
[12 May 2019] DSA-4442 ghostscript - security update
[10 May 2019] DSA-4441 symfony - security update
[09 May 2019] DSA-4440 bind9 - security update
[09 May 2019] DSA-4439 postgresql-9.6 - security update
[07 May 2019] DSA-4438 atftp - security update

For older security advisories see the Security Page. If you would like to receive security advisories as soon as they're announced, subscribe to the debian-security-announce mailing list.