DSpace ESPOCH, the repository of Escuela Superior Politécnica de Chimborazo, Ecuadoru has improved the OAI-PMH interface and delivers operable dc:identifiers now.
The basicurl is: http://dspace.espoch.edu.ec/oai/request
The repository uses DSpace.
OpenDOAR Entry

NICONURS of Niigata College of Nursing, Japan, has been migrated.
The new basicurl is https://niconurs.repo.nii.ac.jp/oai
The repository uses WEKO now.
OpenDOAR entry

PsyDok, Germany has changed the OAI-PMH basicurl.
The new basicurl is http://psydok.psycharchives.de/oai/request
The repository uses DSpace now.
OpenDOAR entry

OJS @ Queen's University, Canada has changed the OAI-PMH basicurl.
The new basicurl is https://ojs.library.queensu.ca/index.php/index/oai
The repository uses Opus 4 now.

Repositorio Digital UCSG, repository of Universidad Católica de Santiago de Guayaquil, Ecuador has changed the OAI-PMH basicurl.
The new basicurl is http://repositorio.ucsg.edu.ec/oai/request
The repository uses DSpace.
OpenDOAR entry

BIB-OPUS-Publikationsserver, Germany has changed the OAI-PMH basicurl, Germany has changed the OAI-PMH basicurl.
The new basicurl is https://opus4.kobv.de/opus4-bib-info/oai
The repository uses Opus 4 now
OpenDOAR entry

SWOP Südwestdeutscher Online Publikationsserver, Germany has changed the OAI-PMH basicurl.
The new basicurl is https://swop.bsz-bw.de/oai
The repository uses Opus 4 now
OpenDOAR entry

PubliCatt, repository of the Università Cattolica del Sacro Cuore, Italy has changed the OAI-PMH basicurl.
The new basicurl is https://publicatt.unicatt.it/oai/request
The repository uses DSpace IRIS.
OpenDOAR entry

Universidad Catolica del Uruguay Publicaciones has changed the homepage url and the OAI-PMH basicurl.
The new basicurl is http://revistas.ucu.edu.uy/index.php/index/oai
The repository uses OJS.

Scholarly Commons at Miami University, US has re-activated the OAI-PMH interface.
The basicurl is https://sc.lib.miamioh.edu/oai/request
The repository uses DSpace.
OpenDOAR entry

OPUS Publication Server of the University of Stuttgart, Germany has been migrated.
The new basicurl is http://elib.uni-stuttgart.de/oai/request
The repository uses DSpace now.
OpenDOAR entry

New OAI-PMH Repository: Digitale Sammlungen der Universitätsbibliothek Mannheim, Germany.
The OAI-PMH basicurl is: http://goobi.bib.uni-mannheim.de/oai/
The repository uses Goobi.

New OAI-PMH Repository: Digitale Sammlung der Universitätsbibliothek Stuttgart, Germany.
The OAI-PMH basicurl is: http://digibus.ub.uni-stuttgart.de/viewer/oai/
The repository uses Goobi.

Repositorio digital de tesis - URP of Universidad Ricardo Palma, Peru, has changed the OAI-PMH basicurl.
The new basicurl is http://cybertesis.urp.edu.pe/oai/request
The repository uses DSpace.
OpenDOAR entry

Repositorio Institucional UNI of Universidad Nacional de Ingeniería, Peru has been migrated.
The new basicurl is http://cybertesis.uni.edu.pe/oai/request
The repository uses DSpace now.