diff --git a/.github/workflows/bump-unbound.yml b/.github/workflows/bump-unbound.yml
index ff44497..ecf166e 100644
--- a/.github/workflows/bump-unbound.yml
+++ b/.github/workflows/bump-unbound.yml
@@ -113,7 +113,7 @@ jobs:
 
       - name: Set up Docker Buildx
         if: steps.versions.outputs.up_to_date == 'false' && steps.existing.outputs.exists == 'false'
-        uses: docker/setup-buildx-action@bb05f3f5519dd87d3ba754cc423b652a5edd6d2c # v4.2.0
+        uses: docker/setup-buildx-action@37fe631027851001ddb9b187196cc803df7f5f0e # v4.3.0
 
       - name: Regenerate example config
         if: steps.versions.outputs.up_to_date == 'false' && steps.existing.outputs.exists == 'false'