diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 505c7bd..f2b99a0 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -20,7 +20,7 @@ jobs:
           python-version: "3.13"
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v8
+        uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b
 
       - name: Install dependencies
         run: uv sync --dev