diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index edfa31fa0..49b53db41 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -32,7 +32,7 @@ jobs:
             tox.ini
             cachedate.txt
 
-      - run: python -m pip install tox
+      - run: python -m pip install tox tox-uv
 
       - run: python -m tox run -e "${{ matrix.toxenv }}"
 
@@ -45,7 +45,7 @@ jobs:
         with:
           python-version: "3.x"
       - name: install requirements
-        run: python -m pip install build tox
+        run: python -m pip install build tox tox-uv
       - name: build and unpack sdist
         run: |
           python -m build --sdist
@@ -83,7 +83,7 @@ jobs:
             tox.ini
             cachedate.txt
 
-      - run: python -m pip install tox
+      - run: python -m pip install tox tox-uv
 
       - name: cache tox virtualenvs
         uses: actions/cache@v5
@@ -145,7 +145,7 @@ jobs:
             tox.ini
             cachedate.txt
 
-      - run: python -m pip install tox
+      - run: python -m pip install tox tox-uv
 
       - name: regenerate hook config
         run: tox run -e generate-hooks-config
diff --git a/.github/workflows/cron.yaml b/.github/workflows/cron.yaml
index 23c32fa47..1f3eb7aa8 100644
--- a/.github/workflows/cron.yaml
+++ b/.github/workflows/cron.yaml
@@ -15,8 +15,8 @@ jobs:
       with:
         python-version: '3.x'
 
-    - name: install tox
-      run: python -m pip install 'tox' 'rust-just'
+    - name: install tox, uv, and just
+      run: python -m pip install 'tox' 'tox-uv' 'uv' 'rust-just'
 
     - name: vendor-schemas
       run: just vendor-schemas