Sourced from pymongo's releases.

PyMongo 4.15.4

Community notes: https://www.mongodb.com/community/forums/t/pymongo-4-15-4-released/331292

PyMongo 4.15.3

Community notes: https://www.mongodb.com/community/forums/t/pymongo-4-15-3-released/329778

Sourced from pymongo's changelog.

Changes in Version 4.15.4 (2025/10/21)

Version 4.15.4 is a bug fix release.

• Relaxed the callback type of :meth:~pymongo.asynchronous.client_session.AsyncClientSession.with_transaction to allow the broader Awaitable type rather than only Coroutine objects.
• Added the missing Python 3.14 trove classifier to the package metadata.

Issues Resolved ...............

See the PyMongo 4.15.4 release notes in JIRA_ for the list of resolved issues in this release.

.. _PyMongo 4.15.4 release notes in JIRA: https://jira.mongodb.org/secure/ReleaseNote.jspa?projectId=10004&version=47237

Changes in Version 4.15.3 (2025/10/07)

Version 4.15.3 is a bug fix release.

• Fixed a memory leak when raising :class:bson.errors.InvalidDocument with C extensions.
• Fixed the return type of the :meth:~pymongo.asynchronous.collection.AsyncCollection.distinct, :meth:~pymongo.synchronous.collection.Collection.distinct, :meth:pymongo.asynchronous.cursor.AsyncCursor.distinct, and :meth:pymongo.asynchronous.cursor.AsyncCursor.distinct methods.

Issues Resolved ...............

See the PyMongo 4.15.3 release notes in JIRA_ for the list of resolved issues in this release.

.. _PyMongo 4.15.3 release notes in JIRA: https://jira.mongodb.org/secure/ReleaseNote.jspa?projectId=10004&version=47293

• 07d51b1 PYTHON-5639 Prep for 4.15.4 release (#2614)
• 477217f [TASK]-[PYTHON-5623]: [v4.15] Change with_transaction callback return type to...
• f3ea373 PYTHON-5624 - Add Python 3.14 trove classifier (#2593)
• a5a50a8 BUMP 4.15.4.dev0
• 6116811 PYTHON-5609 Prepare for 4.15.3 Release (#2584)
• fef10d2 PYTHON-5596 Fix return type for distinct methods (#2576) [v4.15] (#2583)
• 039c35b [v4.15] PYTHON-5571 - Fix memory leak when raising InvalidDocument with C ext...
• a71c96d BUMP 4.15.3.dev0
• See full diff in compare view

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