From 60e3fa9ea8d5e3b5f1d362c350a4fc15633736e0 Mon Sep 17 00:00:00 2001
From: Jeffrey 'Alex' Clark <aclark@aclark.net>
Date: Tue, 2 Jun 2026 13:56:46 -0400
Subject: [PATCH 1/3] PYTHON-5387 Add beta Python 3.15

Per `uv` docs:

- "Python pre-releases will be used if there is no other available installation
   matching the request."
---
 .github/workflows/test-python.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/test-python.yml b/.github/workflows/test-python.yml
index 2a70021cf7..78394becf5 100644
--- a/.github/workflows/test-python.yml
+++ b/.github/workflows/test-python.yml
@@ -59,7 +59,7 @@ jobs:
       matrix:
         # Tests currently only pass on ubuntu on GitHub Actions.
         os: [ubuntu-latest]
-        python-version: ["3.10", "pypy-3.11", "3.13t"]
+        python-version: ["3.10", "pypy-3.11", "3.13t", "3.15"]
         mongodb-version: ["8.0"]
 
     name: CPython ${{ matrix.python-version }}-${{ matrix.os }}

From d89c5bdf9b2625dabf8da2acfa38f092edf2d88f Mon Sep 17 00:00:00 2001
From: Jeffrey 'Alex' Clark <aclark@aclark.net>
Date: Wed, 3 Jun 2026 14:22:30 -0400
Subject: [PATCH 2/3] Use a neutral label like "Python" to keep CI output
 accurate.

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
---
 .github/workflows/test-python.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/test-python.yml b/.github/workflows/test-python.yml
index 78394becf5..afb6e2e100 100644
--- a/.github/workflows/test-python.yml
+++ b/.github/workflows/test-python.yml
@@ -62,7 +62,7 @@ jobs:
         python-version: ["3.10", "pypy-3.11", "3.13t", "3.15"]
         mongodb-version: ["8.0"]
 
-    name: CPython ${{ matrix.python-version }}-${{ matrix.os }}
+    name: Python ${{ matrix.python-version }}-${{ matrix.os }}
     steps:
       - uses: actions/checkout@v6.0.2
         with:

From 41cc2e26a2dd2ed57ff9b6975367cd742459d99d Mon Sep 17 00:00:00 2001
From: Jeffrey 'Alex' Clark <aclark@aclark.net>
Date: Wed, 10 Jun 2026 12:04:16 -0400
Subject: [PATCH 3/3] PYTHON-5387 Skip test_fork failures

---
 test/test_fork.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/test/test_fork.py b/test/test_fork.py
index dad947d8c5..976acbb876 100644
--- a/test/test_fork.py
+++ b/test/test_fork.py
@@ -36,6 +36,10 @@
     is_greenthread_patched(),
     "gevent does not support POSIX-style forking.",
 )
+@unittest.skipIf(
+    sys.version_info >= (3, 15),
+    "fork() in multi-threaded processes is deprecated in Python 3.15+ (PYTHON-5874)",
+)
 class TestFork(IntegrationTest):
     def test_lock_client(self):
         # Forks the client with some items locked.