diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 297038b..1ef037f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,8 +19,9 @@ jobs:
       - uses: actions/checkout@v4
       - uses: astral-sh/setup-uv@v5
         with:
+          version: "0.13.4"
           enable-cache: true
-      - run: uv venv --python 3.12 && uv pip install -e "python[test]" -r tests/example-course/requirements.txt
+      - run: uv venv --python 3.14 && uv pip install -e "python[test]" -r tests/example-course/requirements.txt
       - run: uv run pytest -q tests/python
 
   js:
@@ -52,6 +53,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: astral-sh/setup-uv@v5
         with:
+          version: "0.13.4"
           enable-cache: true
       - uses: actions/setup-node@v4
         with:
@@ -60,7 +62,7 @@ jobs:
           cache-dependency-path: js/package-lock.json
       - name: Install
         run: |
-          uv venv python/.venv --python 3.12
+          uv venv python/.venv --python 3.14
           VIRTUAL_ENV=python/.venv uv pip install -e "python[test]" -r tests/example-course/requirements.txt
           (cd js && npm ci --no-audit --no-fund)
       - name: Build the example course
diff --git a/.github/workflows/course-check.yml b/.github/workflows/course-check.yml
index a377f9e..cc728d6 100644
--- a/.github/workflows/course-check.yml
+++ b/.github/workflows/course-check.yml
@@ -11,7 +11,7 @@ on:
     inputs:
       python-version:
         type: string
-        default: "3.12"
+        default: "3.14"
       requirements:
         description: The course's own Python packages (relative to working-directory). Skipped if missing.
         type: string
@@ -46,6 +46,7 @@ jobs:
 
       - uses: astral-sh/setup-uv@v5
         with:
+          version: "0.13.4"
           enable-cache: true
           cache-dependency-glob: "**/requirements*.txt"
 
diff --git a/.github/workflows/course-publish.yml b/.github/workflows/course-publish.yml
index b22c896..667b688 100644
--- a/.github/workflows/course-publish.yml
+++ b/.github/workflows/course-publish.yml
@@ -16,7 +16,7 @@ on:
     inputs:
       python-version:
         type: string
-        default: "3.12"
+        default: "3.14"
       requirements:
         description: The course's own Python packages (relative to working-directory). Skipped if missing.
         type: string
@@ -54,6 +54,7 @@ jobs:
 
       - uses: astral-sh/setup-uv@v5
         with:
+          version: "0.13.4"
           enable-cache: true
           cache-dependency-glob: "**/requirements*.txt"
 
diff --git a/.github/workflows/course-wheels.yml b/.github/workflows/course-wheels.yml
index 611d1a9..04d3ae3 100644
--- a/.github/workflows/course-wheels.yml
+++ b/.github/workflows/course-wheels.yml
@@ -32,6 +32,8 @@ jobs:
       - uses: actions/checkout@v4
 
       - uses: astral-sh/setup-uv@v5
+        with:
+          version: "0.13.4"
 
       - name: Build wheels into _wheels/
         env:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 62ffe92..dbc9ebc 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -76,6 +76,8 @@ jobs:
         with:
           ref: ${{ needs.release-please.outputs.tag }}
       - uses: astral-sh/setup-uv@v5
+        with:
+          version: "0.13.4"
       - run: uv build --out-dir dist python
       - uses: pypa/gh-action-pypi-publish@release/v1
         with: