diff --git a/.github/workflows/self-test-sign-and-attest.yml b/.github/workflows/self-test-sign-and-attest.yml
index fe81e05..fb00837 100644
--- a/.github/workflows/self-test-sign-and-attest.yml
+++ b/.github/workflows/self-test-sign-and-attest.yml
@@ -44,7 +44,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f  # v3.12.0
+        uses: docker/setup-buildx-action@4d04d5d9486b7bd6fa91e7baf45bbb4f8b9deedd  # v4.0.0
 
       - name: Create test Dockerfile
         shell: bash