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End of life  /  Debian  /  9

End of life

Debian 9 is past end of life.

Security fixes stopped on 1 Jul 2022, 1581 days ago. New vulnerabilities in 9 won’t be fixed. Paid extended support runs until 30 Jun 2027.

Released
17 Jun 2017
Active support
ended 18 Jul 2020
Security fixes
ended 1 Jul 2022
Extended support
until 30 Jun 2027
Latest
9.13

Upgrade to Debian 13: security fixes until 30 Jun 2030.

What to upgrade to

Go to 13.

13 is the newest supported Debian cycle, with security fixes until 30 Jun 2030.

Before you upgrade

Upgrade one release at a time, after a backup. A fresh server on the new release is often quicker.

How to check your version

Which Debian is this site on?

On the server

$ cat /etc/debian_version
12.12

Release name

$ cat /etc/os-release
VERSION="12 (bookworm)"

Know before support ends.

Porro reads the PHP, framework and database version from every site and tells you 90 days before support runs out.

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Dates from endoflife.date/debian, checked daily · data as of 29 Oct 2026.