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⬆️ [bump][backend] Update tzdata requirement from <2023.0,>=2022.4 to >=2022.4,<2027.0 in /backend - #177

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⬆️ [bump][backend] Update tzdata requirement from <2023.0,>=2022.4 to >=2022.4,<2027.0 in /backend#177
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Updates the requirements on tzdata to permit the latest version.

Release notes

Sourced from tzdata's releases.

2026.2: Release of upstream tzdata 2026b

Version 2026.2

Upstream version 2026b released 2026-04-23T06:06:43+00:00

Briefly:

British Columbia moved to permanent -07 on 2026-03-09. Some more overflow bugs have been fixed in zic.

Changes to future timestamps

British Columbia’s 2026-03-08 spring forward was its last foreseeable clock change, as it moved to permanent -07 thereafter. (Thanks to Arthur David Olson.) Although the change to permanent -07 legally took place on 2026-03-09, temporarily model the change to occur on 2026-11-01 at 02:00 instead. This works around a limitation in CLDR v48.2 (2026-03-17). This temporary hack is planned to be removed after CLDR is fixed.

Changelog

Sourced from tzdata's changelog.

Version 2026.2

Upstream version 2026b released 2026-04-23T06:06:43+00:00

Briefly:

British Columbia moved to permanent -07 on 2026-03-09. Some more overflow bugs have been fixed in zic.

Changes to future timestamps

British Columbia’s 2026-03-08 spring forward was its last foreseeable clock change, as it moved to permanent -07 thereafter. (Thanks to Arthur David Olson.) Although the change to permanent -07 legally took place on 2026-03-09, temporarily model the change to occur on 2026-11-01 at 02:00 instead. This works around a limitation in CLDR v48.2 (2026-03-17). This temporary hack is planned to be removed after CLDR is fixed.

Version 2026.1

Upstream version 2026a released 2026-03-02T06:59:49+00:00

Briefly:

Moldova has used EU transition times since 2022. The "right" TZif files are no longer installed by default. -DTZ_RUNTIME_LEAPS=0 disables runtime support for leap seconds. TZif files are no longer limited to 50 bytes of abbreviations. zic is no longer limited to 50 leap seconds. Several integer overflow bugs have been fixed.

Changes to past and future timestamps

Since 2022 Moldova has observed EU transition times, that is, it has sprung forward at 03:00, not 02:00, and has fallen back at 04:00, not 03:00. (Thanks to Heitor David Pinto.)

Changes to data

Remove Europe/Chisinau from zonenow.tab, as it now agrees with Europe/Athens for future timestamps.

Version 2025.3

Upstream version 2025c released 2025-12-10T22:42:37+00:00

Briefly:

Several code changes for compatibility with FreeBSD.

... (truncated)

Commits
  • 1ed8943 Update tzdata to version '2026b' (#135)
  • e3b2209 Add 14-day cooldown to Dependabot
  • 7e5b595 Hash pin GitHub Actions
  • 4997cab Update tzdata to version '2026a' (#123)
  • 4d6c41f Update development status to 'Production/Stable' (#127)
  • 7c1ce85 Remove 'v' from tags in auto-tag.yml
  • 77a9c09 Update docs links to tzdata.python.org (#125)
  • 11148f6 Remove quotes from update branch names
  • 98fa430 Bump actions/checkout from 5 to 6 in the actions group (#122)
  • 7ef7c61 Add auto-tag workflow (#110)
  • Additional commits viewable in compare view

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@dependabot
⬆️ [bump][backend] Update tzdata requirement in /backend
825251b 
Updates the requirements on [tzdata](https://github.com/python/tzdata) to permit the latest version.
- [Release notes](https://github.com/python/tzdata/releases)
- [Changelog](https://github.com/python/tzdata/blob/master/NEWS.md)
- [Commits](python/tzdata@2022.4...2026.2)

---
updated-dependencies:
- dependency-name: tzdata
  dependency-version: '2026.2'
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot dependabot Bot added dependencies Pull requests that update a dependency file python Pull requests that update Python code labels May 22, 2026
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The latest updates on your projects. Learn more about Vercel for GitHub.

Project Deployment Actions Updated (UTC)
kayman Ready Ready Preview, Comment May 22, 2026 4:47am

@dependabot dependabot Bot mentioned this pull request May 22, 2026
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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.34%. Comparing base (fe1de11) to head (825251b).
⚠️ Report is 97 commits behind head on develop.

Additional details and impacted files 
@@           Coverage Diff            @@
##           develop     #177   +/-   ##
========================================
  Coverage    84.34%   84.34%           
========================================
  Files           48       48           
  Lines         1380     1380           
========================================
  Hits          1164     1164           
  Misses         216      216

☔ View full report in Codecov by Harness.
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@dependabot @github

dependabot Bot commented on behalf of github Jun 22, 2026

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OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version. You can also ignore all major, minor, or patch releases for a dependency by adding an ignore condition with the desired update_types to your config file.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.

@dependabot
dependabot Bot deleted the dependabot/pip/backend/develop/tzdata-gte-2022.4-and-lt-2027.0 branch June 22, 2026 08:58
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