From 93c46ca3af4f9c67c9d8521e4da4fd6481feb43f Mon Sep 17 00:00:00 2001
From: Henry Schreiner <henryfs@princeton.edu>
Date: Wed, 5 Aug 2026 18:32:27 -0400
Subject: [PATCH] feat: support Python 3.15

Add the 3.15 classifier, tox environment, and CI matrix entry.

Assisted-by: ClaudeCode:claude-opus-4.8
---
 .github/workflows/build.yaml | 1 +
 CHANGELOG.rst                | 2 +-
 pyproject.toml               | 6 ++++--
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index a8b168a..9f3d527 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -25,6 +25,7 @@ jobs:
             3.12
             3.13
             3.14
+            3.15
 
       # get the week of the year (1-52) for cache control
       # this ensures that at least weekly we'll test with a clear cache
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index d725bf5..17318f7 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -4,7 +4,7 @@ CHANGELOG
 Unreleased
 ----------
 
-- Add support for Python 3.14
+- Add support for Python 3.14 and 3.15
 - Remove support for Python 3.8
 - Correct the type of the ``dependency_groups`` parameter to ``resolve()``,
   ``resolve_all()``, and ``DependencyGroupsResolver()``.
diff --git a/pyproject.toml b/pyproject.toml
index a18c099..0b8385c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,6 +32,7 @@ classifiers = [
   "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13",
   "Programming Language :: Python :: 3.14",
+  "Programming Language :: Python :: 3.15",
   "Programming Language :: Python :: Implementation :: CPython",
   "Programming Language :: Python :: Implementation :: PyPy",
 ]
@@ -124,10 +125,11 @@ env_list = [
     "3.12",
     "3.13",
     "3.14",
+    "3.15",
 ]
 
 [tool.tox.labels]
-ci = ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14", "covcombine", "covreport"]
+ci = ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14", "3.15", "covcombine", "covreport"]
 ci-mypy = ["mypy-py39", "mypy-py313"]
 ci-package-check = ["twine-check"]
 
@@ -150,7 +152,7 @@ description = "Combine coverage outputs"
 skip_install = true
 dependency_groups = ["coverage"]
 commands = [["coverage", "combine"]]
-depends = ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
+depends = ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14", "3.15"]
 
 [tool.tox.env.covreport]
 description = "Report on combined coverage outputs"