diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index bc70269..1033b09 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -23,7 +23,7 @@ jobs:
           persist-credentials: false
 
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@11f9893b081a58869d3b5fccaea48c9e9e46f990 # v8.3.2
+        uses: astral-sh/setup-uv@c771a70e6277c0a99b617c7a806ffedaca235ff9 # v9.0.0
         with:
           # Disable caching in the release workflow (zizmor cache-poisoning).
           enable-cache: false
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e4a6d77..b6871b7 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -23,7 +23,7 @@ jobs:
           submodules: true
           persist-credentials: false
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@11f9893b081a58869d3b5fccaea48c9e9e46f990 # v8.3.2
+        uses: astral-sh/setup-uv@c771a70e6277c0a99b617c7a806ffedaca235ff9 # v9.0.0
       - name: Install tox
         run: uv tool install --python-preference only-managed --python 3.13 tox --with tox-uv --with tox-gh
       - name: Install Python