26 May 2025
Koha is the first free and open source software library automation package (ILS). Development is sponsored by libraries of varying types and sizes, volunteers, and support companies from around the world. The website for the Koha project is:
Koha 23.11.15 can be downloaded from:
Installation instructions can be found at:
Koha 23.11.15 is a bugfix/maintenance release.
It includes 1 bugfixe and 1 security fixe.
This should be the last 23.11 version, we strongly advice to upgrade to newest stable or LTS version.
System requirements
You can learn about the system components (like OS and database) needed for running Koha on the community wiki.
This patch updates the ILS-DI authorized IPs preference to deny all IPs not listed in the preference.
Previously if no text was entered the ILS-DI service was accessible by all IPs, now it requires explicitly defining the IPs that can access the service.
Upgrading libraries using ILS-DI should check that they have the necessary IPs defined in the system preference.
The Koha manual is maintained in Sphinx. The home page for Koha documentation is
Koha Documentation As of the date of these release notes, the Koha manual is available in the following languages:
Armenian (hy_ARMN) (100%)
The Git repository for the Koha manual can be found at
Complete or near-complete translations of the OPAC and staff interface are available in this release for the following languages:
Partial translations are available for various other languages.
The Koha team welcomes additional translations; please see
For information about translating Koha, and join the koha-translate list to volunteer:
The most up-to-date translations can be found at:
The release team for Koha 23.11.15 is
Release Manager: Katrin Fischer
Release Manager assistants:
QA Manager: Martin Renvoize
QA Team:
Security Manager: Tomás Cohen Arazi
Topic Experts:
Bug Wranglers:
Packaging Manager: Mason James
Documentation Manager: Philip Orr
Documentation Team:
Wiki curators:
Release Maintainers:
We thank the following individuals who contributed patches to Koha 23.11.15
We thank the following libraries, companies, and other institutions who contributed patches to Koha 23.11.15
We also especially thank the following individuals who tested patches for Koha
We regret any omissions. If a contributor has been inadvertently missed, please send a patch against these release notes to koha-devel@lists.koha-community.org.
The Koha project uses Git for version control. The current development version of Koha can be retrieved by checking out the main branch of:
The branch for this version of Koha and future bugfixes in this release line is 23.11.x.
Bug reports and feature requests can be filed at the Koha bug tracker at:
He rau ringa e oti ai. (Many hands finish the work)
Autogenerated release notes updated last on 26 May 2025 13:56:56.