v2.5.2 (Aug 9, 2026)

NumPy 2.5.2 Release Notes

The NumPy 2.5.2 is a patch release that fixes bugs discovered after the 2.5.1
release. The big news is that it includes wheels for the newly released
Python 3.15.0rc1.

This release supports Python versions 3.12-3.15

C API changes

PyArray_StringDTypeObject is opaque under the abi3t stable ABI

The PyArray_StringDTypeObject was accidentally exposed in NumPy
2.5 when targeting the free-threading-compatible stable ABI
(Py_TARGET_ABI3T). PyArray_StringDTypeObject is now an opaque
struct: extensions compiled that way cannot access its fields, since
the struct layout depends on the size of the object header. Any code
that accessed PyArray_StringDTypeObject fields in an abi3t build
would have crashed, so we are making this API change in a bugfix
release.

The NpyString allocator API remains usable by passing the
descriptor object pointer, e.g.
NpyString_acquire_allocator((PyArray_StringDTypeObject *)descr).

(gh-31771)

Contributors

A total of 16 people contributed to this release. People with a "+" by their
names contributed a patch for the first time.

• Abhijeetsingh Meena +
• Charalampos Stratakis
• Charles Harris
• Chris Ninham +
• David Woods
• Geonho +
• Gopu Yeshwanth Reddy +
• Iason Krommydas
• Ijtihed Kilani
• Jelle Zijlstra +
• Joren Hammudoglu
• Kumar Aditya
• Mike Boyle
• Nathan Goldbaum
• Raghuveer Devulapalli
• Sebastian Berg

Pull requests merged

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