diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 01f35ba..c3c6a14 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -26,7 +26,7 @@ jobs:
         with:
           persist-credentials: false
       - name: setup environment
-        uses: astral-sh/setup-uv@11f9893b081a58869d3b5fccaea48c9e9e46f990 # 8.3.2
+        uses: astral-sh/setup-uv@c771a70e6277c0a99b617c7a806ffedaca235ff9 # 9.0.0
         with:
           python-version: "${{ matrix.python-version }}"
       - name: run tests