diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index afddcc5..64c2612 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -113,7 +113,7 @@ jobs:
           fi
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v4
+        uses: docker/setup-buildx-action@f87e5991a6d7451dcb8d9637bfbc97413f497069 # v4
 
       - name: Log in to registry
         uses: docker/login-action@b45d80f862d83dbcd57f89517bcf500b2ab88fb2 # v4