HomeAssistant Core 2026.6.4 released on 19-06-2026
HomeAssistant Core 2026.6.4 is out now. It delivers a set of critical fixes and reliability/security updates — most notably a severe Growatt total_output_power scaling bug (V1 API) that reported values 1000x too low, fixes that prevent leaking the Immich API key in error logs, and a correction for double-slash URLs when writing to InfluxDB.
Check the Home Assistant GitHub release page or the official integration docs for the full changelog and upgrade instructions before you update.
What’s in this release
- Corrects a severe Growatt total_output_power scaling issue for the V1 API that caused readings to be reported 1000× too low.
- Security and reliability fixes: avoid leaking Immich API keys in error logs, resolve InfluxDB double-slash URL writes, add retry logic for WebDAV on connection errors, and ensure non-401 HTTP errors are re-raised in Tank Utility setup.
- Integration and localisation updates: Subaru API_GEN_4 support, Sonos favourites included in source lists, dozens of config flow translation and UI wording fixes across many integrations, several integration-specific bug fixes, dependency bumps and a frontend update to 20260527.7.
Upgrade notes
- No breaking changes are listed in the notes, but users of the Growatt integration should update promptly to correct reported power values; Home Assistant 2026.6.4 also patches Immich logging and InfluxDB write issues, so apply the update if you use those integrations.
- If you need to roll back, use your normal Home Assistant rollback method (Supervisor snapshot or restore the previous core version) and report any issues to the project issue tracker.
Let us know how the update goes — share any issues or noteworthy behaviour on the Home Assistant GitHub issue tracker or in the community forums.
