Esteemed Colleagues, I'm trying to upgrade my Koha instance from 20.11.01.000 to 21.05, or 21.11 if I can't do oldstable. I'm running it on Ubuntu 20.04LTS. Short description: the upgrade appears to need perlapi-5-24.1, but it's not available. Long description, my input is in (parentheses); system response is indented in courier: (while upgrading) E: Repository 'http://debian.koha-community.org/koha stable InRelease' changed its 'Codename' value from '20.11' to '21.11' N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details. (so I typed: echo 'deb http://debian.koha-community.org/koha 21.05 main' | sudo tee /etc/apt/sources.list.d/koha.list) (I also tried the above with 21.11) (apt-get install koha-common) koha-common: Depends: libyaml-libyaml-perl but it is not going to be installed E: Unable to correct problems, you have held broken packages. (apt-get install libyaml-libyaml-perl) The following packages have unmet dependencies: libyaml-libyaml-perl : Depends: perlapi-5.24.1 but it is not installable E: Unable to correct problems, you have held broken packages. (apt-get install perlapi-5.24.1) Package perlapi-5-24.1 is not available, but it is referenced to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'perlapi-5.24.1 has no installation candidate (locate perlapi) /usr/share/perl/5.26.1/pod/perlapi.pod (and a few others) I've searched the Wiki, Google, and elsewhere, but I haven't found an answer. However, I've been working mostly in my basement and have a bad case of Basement Brain. Could someone point me towards a solution? Thanks, Fred King, MSLS, AHIP Medical Librarian, MedStar Washington Hospital Center fred.king@medstar.net<mailto:fred.king@medstar.net> 202-877-6670 ORCID 0000-0001-5266-0279 MedStar Authors Catalog: http://medstarauthors.org I don't know much about being a millionaire, but I'll bet I'd be darling at it. --Dorothy Parker ---------------------------------------------------------------------- MedStar Health is a not-for-profit, integrated healthcare delivery system, the largest in Maryland and the Washington, D.C., region. Nationally recognized for clinical quality in heart, orthopedics, cancer and GI. IMPORTANT: This e-mail (including any attachments) may contain information that is private, confidential, or protected by attorney-client or other privilege. If you received this e-mail in error, please delete it from your system without copying it and notify sender by reply e-mail, so that our records can be corrected... Thank you. Help conserve valuable resources - only print this email if necessary.