diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d92f547..fa355c3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -27,7 +27,7 @@ jobs:
 
   test:
     # Interpolated, not a fixed string: a matrix job with a static `name:`
-    # produces three checks called the same thing, and the version under test
+    # produces four checks called the same thing, and the version under test
     # is the only thing that tells them apart.
     name: pytest ${{ matrix.python-version }}
     timeout-minutes: 10
@@ -35,7 +35,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.11", "3.12", "3.13"]
+        python-version: ["3.11", "3.12", "3.13", "3.14"]
     steps:
       - uses: actions/checkout@v7
       - uses: actions/setup-python@v7
diff --git a/AGENTS.md b/AGENTS.md
index bf23476..e436b74 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -18,9 +18,9 @@ TRIPIT_ICAL_URL=tests/fixtures/sample_feed.ics \
 
 Python 3.11+ to run, 3.13 to develop: `.mdformat.toml` sets `exclude`, which
 errors below 3.13, so a 3.12 venv would put an `mdformat` on `PATH` that cannot
-read its own config. The published floor is unchanged and the matrix still
-tests 3.11. The default `python3` on this machine is 3.7 — use
-`/usr/local/bin/python3.13` explicitly.
+read its own config. The published floor is unchanged, and the matrix tests
+every supported minor through 3.14. The default `python3` on this machine is
+3.7. Use `/usr/local/bin/python3.13` explicitly.
 
 ## Architecture
 
@@ -85,7 +85,7 @@ Two keys, and the difference matters:
   the job. GitHub labels a check `<workflow name> / <job name>` and never shows
   the filename, so `pr-title / conventional title` names both the file to open
   and what it did. A matrix job's `name:` has to interpolate the matrix value
-  (`pytest ${{ matrix.python-version }}`) or all three legs produce checks
+  (`pytest ${{ matrix.python-version }}`) or all four legs produce checks
   called the same thing. `tests/test_workflow_naming.py` enforces this, the
   same guard `atdr/contrail-gh#7` added as a shell step in CI there because
   that repo has no test suite to hold it instead. The `Analyze (python)` and
diff --git a/pyproject.toml b/pyproject.toml
index 2af12fc..792a9f6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,6 +20,7 @@ classifiers = [
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
     "Topic :: Utilities",
 ]
 dependencies = [