shaonianche · Oct 28, 2026 · Oct 28, 2026
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14", "3.15"]
 
     steps:
       - uses: actions/checkout@v7.0.1

diff --git a/AGENTS.md b/AGENTS.md
@@ -38,7 +38,7 @@ dependency group already includes those packages so `uv sync --group dev` suppor
 the full suite and `uv run gen-profile`. For a published package, install with
 `pip install 'fit-tool[gen]'` or `uv add 'fit-tool[gen]'`.
 
-The CI baseline is a package build plus the full test suite on Python 3.9 through 3.14. Before finishing a normal code change, run the narrowest relevant tests and then the full suite when practical. Run `uv build` for packaging, entry-point, dependency, or metadata changes.
+The CI baseline is a package build plus the full test suite on Python 3.9 through 3.15. Before finishing a normal code change, run the narrowest relevant tests and then the full suite when practical. Run `uv build` for packaging, entry-point, dependency, or metadata changes.
 
 **Ruff is a CI gate** on the Python 3.12 job (`ruff check fit_tool`). Mypy is configured in `pyproject.toml` and runs in a limited form in CI; core modules are not all under strict mypy yet. Locally:
 

diff --git a/docs/FIT_CONFORMANCE_DESIGN.md b/docs/FIT_CONFORMANCE_DESIGN.md
@@ -670,7 +670,7 @@ allocation based solely on untrusted lengths.
 
 ### 9.4 Required CI gates
 
-- Python 3.9-3.14 full tests (package requires Python >=3.9).
+- Python 3.9-3.15 full tests (package requires Python >=3.9).
 - Ruff and progressively expanded mypy.
 - Garmin conformance corpus.
 - Generated-profile determinism.

diff --git a/docs/RELEASING.md b/docs/RELEASING.md
@@ -34,7 +34,7 @@ set).
 
 ## Checklist
 
-1. **`main` is green** — CI (Python 3.9–3.14 + Garmin JS interop) passes on the commit you will tag.
+1. **`main` is green** — CI (Python 3.9–3.15 + Garmin JS interop) passes on the commit you will tag.
 2. **News fragments are ready** — user-visible changes have `news/<id>.<type>` files (see `AGENTS.md`). Do not hand-edit an already-released section of `CHANGELOG.md`.
 3. **Choose the version** — e.g. `0.9.16` (patch) or `0.10.0` (broader capability signal). PyPI will not accept re-uploading an existing version.
 4. **Bump the package version** in `pyproject.toml`:

diff --git a/news/python-315.misc b/news/python-315.misc
@@ -0,0 +1 @@
+Add Python 3.15 to the CI test matrix and package classifiers.
diff --git a/pyproject.toml b/pyproject.toml
@@ -23,6 +23,7 @@ classifiers = [
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
     "Programming Language :: Python :: 3.14",
+    "Programming Language :: Python :: 3.15",
 ]
 requires-python = ">=3.9"
 # Runtime library and fit-tool CLI need no third-party packages.
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		Add Python 3.15 to the CI test matrix and package classifiers.