Bump pymongo from 4.15.3 to 4.16.0

[dependabot]

Bumps pymongo from 4.15.3 to 4.16.0.

Release notes

Sourced from pymongo's releases.

PyMongo 4.16.0

Community notes:

PyMongo 4.15.5

Community notes: https://www.mongodb.com/community/forums/t/pymongo-4-15-5-released/332185

PyMongo 4.15.4

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

Changelog

Sourced from pymongo's changelog.

Changes in Version 4.16.0 (2026/01/07)

PyMongo 4.16 brings a number of changes including:

• Removed invalid documents from :class:bson.errors.InvalidDocument error messages as doing so may leak sensitive user data. Instead, invalid documents are stored in :attr:bson.errors.InvalidDocument.document.
• PyMongo now requires dnspython>=2.6.1, since dnspython 1.0 is no longer maintained. The minimum version is 2.6.1 to account for CVE-2023-29483 <https://www.cve.org/CVERecord?id=CVE-2023-29483>_.
• Removed support for Eventlet. Eventlet is actively being sunset by its maintainers and has compatibility issues with PyMongo's dnspython dependency.
• Use Zstandard support from the standard library for Python 3.14+, and use backports.zstd for older versions.
• Fixed return type annotation for find_one_and_* methods on :class:~pymongo.asynchronous.collection.AsyncCollection and :class:~pymongo.synchronous.collection.Collection to include None.
• Added support for NumPy 1D-arrays in :class:bson.binary.BinaryVector.
• Prevented :class:~pymongo.encryption.ClientEncryption from loading the crypt shared library to fix "MongoCryptError: An existing crypt_shared library is loaded by the application" unless the linked library search path is set.

Changes in Version 4.15.5 (2025/12/02)

Version 4.15.5 is a bug fix release.

• Fixed a bug that could cause AutoReconnect("connection pool paused") errors when cursors fetched more documents from the database after SDAM heartbeat failures.

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

Commits

• 3290101 Prepare 4.16.0 release (#2672)
• 1be94d2 PYTHON-5685 Fix unified spec sync metadata for csot and sessions tests (#2669)
• 6585d9c PYTHON-2442: Refactor: use _asdict() in _options_dict() (#2670)
• fdb1f7e PYTHON-5677 Prevent ClientEncryption from loading crypt shared library (#2659)
• 0cd9763 Bump zizmorcore/zizmor-action from cb3d8e846e148d1111d90b03375b9c03deceda37 t...
• 2f263d4 PYTHON-5680 Fix handling of expectedDocuments in Unified Test Runner (#2665)
• e9658b2 Add 4.15.5 release date to changelog (#2666)
• 10dd204 Update coverage[toml] requirement from <=7.10.6,>=5 to >=5,<=7.10.7 (#2662)
• 1300677 [Spec Resync] 12-22-2025 (#2663)
• 18c1f14 PYTHON-5529 Introduce optin setting to await for MinPoolSize population (#2664)
• Additional commits viewable in compare view

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.13%. Comparing base (900fd2d) to head (9cb0f6a).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2453   +/-   ##
=======================================
  Coverage   81.13%   81.13%           
=======================================
  Files          77       77           
  Lines        9774     9774           
  Branches     1104     1104           
=======================================
  Hits         7930     7930           
  Misses       1636     1636           
  Partials      208      208           

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[Copilot]

Pull request overview

This PR bumps the pymongo dependency from version 4.15.3 to 4.16.0. The upgrade includes several changes outlined in the PyMongo 4.16.0 changelog, most notably the removal of Eventlet support, a new minimum requirement for dnspython>=2.6.1, and various bug fixes and improvements.

Changes:

• Updated pymongo version constraint from 4.15.3 to 4.16.0 in functional test requirements
• Updated pymongo version constraint from 4.15.3 to 4.16.0 in MongoDB extras requirements

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
requirements/funtest.txt	Updates pymongo version used in functional tests
requirements/extras/mongodb.txt	Updates pymongo version for MongoDB transport optional dependency

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[Copilot]

This version bump introduces a breaking change: PyMongo 4.16.0 has removed support for Eventlet according to the changelog: "Removed support for Eventlet. Eventlet is actively being sunset by its maintainers and has compatibility issues with PyMongo's dnspython dependency."

However, the kombu MongoDB transport code at kombu/transport/mongodb.py:371-373 still includes eventlet detection and monkey patching logic that will no longer work with this version of pymongo. If users attempt to use the MongoDB transport with eventlet, they may encounter compatibility issues or unexpected behavior.

This upgrade should either:

1. Include corresponding code changes to remove/update the eventlet handling in kombu/transport/mongodb.py, or
2. Be accompanied by documentation noting that eventlet is no longer supported with the MongoDB transport, or
3. Be deferred until the eventlet compatibility can be properly addressed.

Additionally, PyMongo 4.16.0 now requires dnspython>=2.6.1 as a dependency, which should be verified to not conflict with other dependencies in the project.

Suggested change

	pymongo==4.16.0
	pymongo<4.16.0

[auvipy]

want to cross check properly before merging this. there are some BC issues