26 Jul 2022
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 21.05.17 can be downloaded from:
Installation instructions can be found at:
Koha 21.05.17 is a bugfix/maintenance release with security fixes.
It includes 1 security fixes, 6 bugfixes.
You can learn about the system components (like OS and database) needed for running Koha here: https://wiki.koha-community.org/wiki/System_requirements_and_recommendations
[30234] Serial local covers don't appear in the staff interface for other libraries with SeparateHoldings
This fixes the display of item-specific local cover images in the staff interface. Before this, item images were not shown for holdings on the record's details view page.
[31005] Cannot edit patrons in other categories if an extended attribute is mandatory and limited to a category
This fixes an error when a mandatory patron attribute limited to a specific patron category was causing a '500 error' when editing a patron not in that category.
[30883] Authorities merge is limited to 100 biblio with Elasticsearch
This fixes the hard-coded limit of 100 when merging authorities (when Elasticsearch is the search engine). When merging authorities where the term is used over 100 times, only the first 100 authorities would be merged and the old term deleted, irrespective of the value set in the AuthorityMergeLimit system preference.
[29418] Error searching for analytics in detail view
Sponsored by Theke Solutions
The Koha manual is maintained in Sphinx. The home page for Koha documentation is
As of the date of these release notes, the Koha manual is available in the following languages:
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 21.05.17 is
Release Manager: Tomás Cohen Arazi
Release Manager assistants:
QA Manager: Katrin Fischer
QA Team:
Topic Experts:
Bug Wranglers:
Packaging Manager: Mason James
Documentation Manager: David Nind
Documentation Team:
Translation Managers:
Wiki curators:
Release Maintainers:
We thank the following libraries, companies, and other institutions who are known to have sponsored new features in Koha 21.05.17
We thank the following individuals who contributed patches to Koha 21.05.17
We thank the following libraries, companies, and other institutions who contributed patches to Koha 21.05.17
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 master branch of:
The branch for this version of Koha and future bugfixes in this release line is 21.05.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 Jul 2022 01:21:21.