diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 238e9ca..30dce6d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -33,7 +33,7 @@ jobs:
 
       - uses: actions/setup-python@v5
         with:
-          python-version: "3.10"
+          python-version: "3.14"
           cache: pip
           cache-dependency-path: pyproject.toml
 
@@ -98,7 +98,7 @@ jobs:
 
       - uses: actions/setup-python@v5
         with:
-          python-version: "3.12"
+          python-version: "3.14"
 
       - run: pip install build twine
 
diff --git a/.github/workflows/github-release.yml b/.github/workflows/github-release.yml
index dcec08f..f8d6d16 100644
--- a/.github/workflows/github-release.yml
+++ b/.github/workflows/github-release.yml
@@ -243,7 +243,7 @@ jobs:
 
       - uses: actions/setup-python@v5
         with:
-          python-version: "3.12"
+          python-version: "3.14"
 
       - name: Rebuild the site from this release
         run: |
diff --git a/.github/workflows/installers.yml b/.github/workflows/installers.yml
index d13ddd5..16b8818 100644
--- a/.github/workflows/installers.yml
+++ b/.github/workflows/installers.yml
@@ -59,9 +59,10 @@ jobs:
 
       - uses: actions/setup-python@v5
         with:
-          # Oldest supported version on purpose: a binary built against an older glibc
-          # and an older Python runs on more machines than one built against the newest.
-          python-version: "3.10"
+          # The Python the project builds with, bundled into every binary. How widely a
+          # Linux binary runs is set by the runner's glibc, which is why the Linux legs
+          # stay on ubuntu-22.04 rather than ubuntu-latest.
+          python-version: "3.14"
 
       - run: pip install . pyinstaller
 
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 0cd786a..eae06c3 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -38,7 +38,7 @@ jobs:
 
       - uses: actions/setup-python@v5
         with:
-          python-version: "3.12"
+          python-version: "3.14"
 
       - run: pip install build twine
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9e776ef..fb0b84f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,13 @@ one caveat SemVer makes for a leading zero: while the major version is still `0`
 
 ## [Unreleased]
 
+### Added
+
+- **Python 3.14 is supported.** The full test suite passes on it, and CI now tests it on
+  Linux, Windows and macOS. Python 3.10 is still the oldest version MeshTerm runs on.
+- **The standalone downloads are built with Python 3.14**, and carry it inside them in
+  place of 3.10. Nothing changes for how you run them.
+
 ### Changed
 
 - **A type-1 node is a companion everywhere.** 0.9.0 called it three different things: