diff --git a/.github/workflows/build_and_test_python.yml b/.github/workflows/build_and_test_python.yml
index 39dfa980..94ccb263 100644
--- a/.github/workflows/build_and_test_python.yml
+++ b/.github/workflows/build_and_test_python.yml
@@ -53,7 +53,7 @@ jobs:
           python-version: ${{ matrix.python }}
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v4
+        uses: astral-sh/setup-uv@37802adc94f370d6bfd71619e3f0bf239e1f3b78 # v4
 
       - name: Install protoc
         run: sudo apt-get update && sudo apt-get install -y protobuf-compiler