This release includes breaking changes for platform teams planning a safe upgrade.
Published 1mo
Media Servers
✓ No known CVEs patched
✓ No known CVEs patched in this version
Topics
docker
jellyfin
maintainerr
maintenance
movies
plex
+6 more
plex-media-server
radarr
seerr
sonarr
tv-series
tv-shows
Affected surfaces
deps
Summary
AI summaryUpdates Highlights, Performance, and 3.15.1 across a mixed release.
Full changelog
3.15.1 (2026-06-17)
Highlights
- Fixed issue where Emby collections failed to create due to an empty initial item, resolving HTTP 500 errors (#3097).
- Fixed Radarr exclusion handling to correctly treat "already excluded" 400 responses as success, ensuring items are properly removed from collections (#3096, #3099).
- Fixed Plex
sw_lastWatchedgetter to returnnullfor never-watched shows, preventing TypeErrors (#3102).
Fixes
- Fixed Emby collections creation by adding an initial item to avoid HTTP 500 errors (#3097).
- Skipped remote creation for empty Emby collections to prevent unnecessary HTTP 500 errors (#3098).
- Fixed Radarr exclusion handling to correctly treat "already excluded" 400 responses as success, avoiding misreporting and ensuring proper exclusion (#3096, #3099).
- Resolved Plex
sw_lastWatchedgetter issue where it threw TypeErrors for never-watched shows (#3102). - Fixed Emby movie/show ID resolution to correctly resolve IDs from the item itself, addressing failures in movie rule actions (#3100).
- Fixed Plex collections to self-heal when empty collections reject every item addition (#3094).
Performance
- Increased timeout for
OverlayRenderServicerender tests to avoid CI flake due to slow native cold-start (#3101).
Dependencies
- Updated 23 dependencies, including nodemailer, @typescript-eslint/parser, axios, @nestjs/typeorm, and sharp.
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About Maintainerr
Looks and smells like Seerr, does the opposite. A library maintenance tool for Plex and Jellyfin.
Related context
Related tools
Earlier breaking changes
- v3.13.0 Section without an operator is now treated as OR instead of AND; migration not reversible.
- v3.13.0 Per-group exclusions now apply only to their own group, not globally.
- v3.13.0 Exclusions are now either global or per-group; removing a global exclusion requires re-adding per-group ones.
- v3.12.1 Renames `WATCH_HISTORY_CONCURRENCY` to `RULE_EVALUATION_CONCURRENCY` for clarity.
- v3.11.0 Overlay reset operations are now gated against concurrent processing runs.
Beta — feedback welcome: [email protected]