Update numpy requirement from >=1.21.4 to >=2.4.5

[dependabot]

Updates the requirements on numpy to permit the latest version.

Release notes

Sourced from numpy's releases.

v2.4.5 (May 15, 2026)

NumPy 2.4.5 Release Notes

NumPy 2.4.5 is a patch release that fixes bugs discovered after the 2.4.4 release, has some typing improvements, and maintains infrastructure.

This release supports Python versions 3.11-3.14

Contributors

A total of 17 people contributed to this release. People with a "+" by their names contributed a patch for the first time.

• Aleksei Nikiforov
• Anarion Zuo +
• Ankit Ahlawat
• Breno Favaretto +
• Charles Harris
• Igor Krivenko +
• Ijtihed Kilani +
• Joren Hammudoglu
• Maarten Baert +
• Matti Picus
• Nathan Goldbaum
• Praneeth Kodumagulla +
• Ralf Gommers
• RoomWithOutRoof +
• Sebastian Berg
• Warren Weckesser
• div +

Pull requests merged

A total of 28 pull requests were merged for this release.

• #31093: MAINT: Prepare 2.4.x for further development
• #31182: TYP: fix np.shape assignability issue for python lists (#31171)
• #31197: ENH: Return rank 0 for empty matrices in matrix_rank (#30422)
• #31198: CI/BUG: add native jobs for s390x, fix bug in pack_inner...
• #31199: BUG: f2py map complex_long_double to NPY_CLONGDOUBLE
• #31205: MAINT: f2py: Stop setting re._MAXCACHE to 50.
• #31206: BUG: fix heap buffer overflow in timedelta to string casts
• #31207: MAINT: Rename ppc64le and s390x workflow (#31121)
• #31208: BUG: Fix matvec/vecmat in-place aliasing (out=input produces...
• #31209: TYP: tile: accept numpy scalars and arrays as second argument...
• #31211: DEP: Undo deprecation for np.dtype() signature used by old pickles...
• #31212: REV: Manual revert of float16 svml use (#31178)
• #31222: TYP: ix_ fix for boolean and non-1d input (#31218)
• #31329: BUG: incorrect temp elision for new-style (NEP 43) user-defined...
• #31330: TYP: fix sliding_window_view axis parameter typing

... (truncated)

Changelog

Sourced from numpy's changelog.

This is a walkthrough of the NumPy 2.4.0 release on Linux, which will be the first feature release using the numpy/numpy-release <https://github.com/numpy/numpy-release>__ repository.

The commands can be copied into the command line, but be sure to replace 2.4.0 with the correct version. This should be read together with the :ref:general release guide <prepare_release>.

Facility preparation

Before beginning to make a release, use the requirements/*_requirements.txt files to ensure that you have the needed software. Most software can be installed with pip, but some will require apt-get, dnf, or whatever your system uses for software. You will also need a GitHub personal access token (PAT) to push the documentation. There are a few ways to streamline things:

• Git can be set up to use a keyring to store your GitHub personal access token. Search online for the details.

Prior to release

Add/drop Python versions

When adding or dropping Python versions, multiple config and CI files need to be edited in addition to changing the minimum version in pyproject.toml. Make these changes in an ordinary PR against main and backport if necessary. We currently release wheels for new Python versions after the first Python RC once manylinux and cibuildwheel support that new Python version.

Backport pull requests

Changes that have been marked for this release must be backported to the maintenance/2.4.x branch.

Update 2.4.0 milestones

Look at the issues/prs with 2.4.0 milestones and either push them off to a later version, or maybe remove the milestone. You may need to add a milestone.

Check the numpy-release repo

... (truncated)

Commits

• 26e8185 Merge pull request #31441 from charris/prepare-2.4.5
• 573110c REL: Prepare for the NumPy 2.4.5 release.
• be6123a Merge pull request #31426 from jorenham/backport-31425
• a286f52 TYP: Fix DTypeLike runtime type-checker support
• f880727 Merge pull request #31404 from charris/backport-31399
• 626d469 Merge pull request #31402 from charris/backport-31397
• a42bd48 Merge pull request #31401 from charris/backport-31396
• 207ad05 TYP: _NestedSequence type parameter default to work around a mypy issue (#3...
• 309b637 BUG: exclude pycache directories from wheels (#31397)
• 8ded93c BUG: Avoid UB in safe_[add,sub,mul] helpers (#31396)
• Additional commits viewable in compare view

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