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build(deps-dev): bump mypy from 1.13.0 to 1.19.1#1481

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Jan 12, 2026
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build(deps-dev): bump mypy from 1.13.0 to 1.19.1#1481
github-actions[bot] merged 1 commit into
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dependabot/pip/mypy-1.19.1

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@dependabot

@dependabot dependabot Bot commented on behalf of github Jan 12, 2026

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Bumps mypy from 1.13.0 to 1.19.1.

Changelog

Sourced from mypy's changelog.

Mypy 1.19.1

  • Fix noncommutative joins with bounded TypeVars (Shantanu, PR 20345)
  • Respect output format for cached runs by serializing raw errors in cache metas (Ivan Levkivskyi, PR 20372)
  • Allow types.NoneType in match cases (A5rocks, PR 20383)
  • Fix mypyc generator regression with empty tuple (BobTheBuidler, PR 20371)
  • Fix crash involving Unpack-ed TypeVarTuple (Shantanu, PR 20323)
  • Fix crash on star import of redefinition (Ivan Levkivskyi, PR 20333)
  • Fix crash on typevar with forward ref used in other module (Ivan Levkivskyi, PR 20334)
  • Fail with an explicit error on PyPy (Ivan Levkivskyi, PR 20389)

Acknowledgements

Thanks to all mypy contributors who contributed to this release:

  • A5rocks
  • BobTheBuidler
  • bzoracler
  • Chainfire
  • Christoph Tyralla
  • David Foster
  • Frank Dana
  • Guo Ci
  • iap
  • Ivan Levkivskyi
  • James Hilton-Balfe
  • jhance
  • Joren Hammudoglu
  • Jukka Lehtosalo
  • KarelKenens
  • Kevin Kannammalil
  • Marc Mueller
  • Michael Carlstrom
  • Michael J. Sullivan
  • Piotr Sawicki
  • Randolf Scholz
  • Shantanu
  • Sigve Sebastian Farstad
  • sobolevn
  • Stanislav Terliakov
  • Stephen Morton
  • Theodore Ando
  • Thiago J. Barbalho
  • wyattscarpenter

I’d also like to thank my employer, Dropbox, for supporting mypy development.

Mypy 1.18

We’ve just uploaded mypy 1.18.1 to the Python Package Index (PyPI). Mypy is a static type checker for Python. This release includes new features, performance

... (truncated)

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@dependabot dependabot Bot added dependencies Pull requests that update a dependency file python Pull requests that update Python code labels Jan 12, 2026
@github-actions
github-actions Bot enabled auto-merge (squash) January 12, 2026 02:38
Bumps [mypy](https://github.com/python/mypy) from 1.13.0 to 1.19.1.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.13.0...v1.19.1)

---
updated-dependencies:
- dependency-name: mypy
  dependency-version: 1.19.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot
dependabot Bot force-pushed the dependabot/pip/mypy-1.19.1 branch from 2966e71 to 985c6ff Compare January 12, 2026 02:42
@codspeed-hq

codspeed-hq Bot commented Jan 12, 2026

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Merging this PR will degrade performance by 26.85%

⚡ 3 improved benchmarks
❌ 1 regressed benchmark
✅ 80 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

Benchmark BASE HEAD Efficiency
test_max[250] 2.8 ms 3.8 ms -26.85%
test_saving_models_individually[10] 13.8 ms 11.6 ms +18.87%
test_get_one[1000] 4.7 ms 3.7 ms +26.23%
test_exists[1000] 5 ms 3.6 ms +39.96%

Comparing dependabot/pip/mypy-1.19.1 (985c6ff) with master (552993a)1

Open in CodSpeed

Footnotes

  1. No successful run was found on master (25b89de) during the generation of this report, so 552993a was used instead as the comparison base. There might be some changes unrelated to this pull request in this report.

@github-actions
github-actions Bot merged commit 8e58c1b into master Jan 12, 2026
14 of 15 checks passed
@dependabot
dependabot Bot deleted the dependabot/pip/mypy-1.19.1 branch January 12, 2026 02:46
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