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Sonarr

INFRA · APIS
Velocity5.0

PVR and library manager for TV series

sonarr.tv ↗

Sonarr 4.0.20 ships Jellyfin auth update and language DB fix in a bug-fix patch cycle

media-automationpvropen-sourcejellyfinself-hostedbug-fixes
◆Current state
Sonarr is in a maintenance phase, shipping multiple point releases per week under v4.0.19 and v4.0.20. The most visible changes are a Jellyfin auth header update (compatibility fix for Jellyfin's own auth changes), a language DB bug fix for unexpected language values, and a free-space checking correction. Most releases in this window arrive without changelog text, consistent with small internal fixes.
◆Where it's heading
Sonarr is a stable, mature project in the arr ecosystem. The Jellyfin auth update shows the project tracks downstream media server changes actively, but there is no directional feature development visible in this window. Release cadence is driven by bug-fixing rather than capability expansion.
◆Prediction
The cadence of small patches will continue until a milestone boundary. A meaningful feature push would require a new v4.1 announcement, which is not visible in the current entries.

◆Recent moves

  1. 1d ago

    Sonarr 4.0.20: Jellyfin auth header + language DB fix

    The v4.0.20 jump brings three visible fixes: unexpected DB language values treated as Unknown (prevents parse errors on edge-case media), a Jellyfin/Emby connection test with new Jellyfin auth header (required for compatibility with current Jellyfin versions), and an optimization that skips the free-space check when other specs already fail. The Jellyfin auth update is the most user-impactful, as Jellyfin recently changed its authentication model.

    View source ↗
  2. 8d ago

    Sonarr 4.0.20 patch

    An internal patch release with no public changelog. Part of the continuous patch cycle under v4.0.20.

    View source ↗
  3. 12d ago

    Sonarr 4.0.19 patch

    Internal patch with no public changelog text, part of the 4.0.19 maintenance stream.

    View source ↗
  4. 18d ago

    Sonarr 4.0.19 patch

    Another internal patch in the 4.0.19 stream, no user-facing changelog. Consistent with Sonarr's rapid small-fix cadence.

    View source ↗
  5. 19d ago

    Sonarr 4.0.19 patch

    Internal patch with no public changelog, part of the dense 4.0.19 patch cycle that produced multiple releases in a single week.

    View source ↗
  6. 23d ago

    Sonarr 4.0.19 patch

    Another unlabeled internal patch in the 4.0.19 stream. No user-visible changes documented.

    View source ↗