diff --git a/.github/workflows/docker.yaml b/.github/workflows/docker.yaml
index bd903c8..04d3829 100644
--- a/.github/workflows/docker.yaml
+++ b/.github/workflows/docker.yaml
@@ -38,6 +38,12 @@ jobs:
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
+        with:
+          # Pin docker-buildx to this version for now
+          #  v0.19.2 has issues with empty keys,
+          #  particularly the "*.cache-to=" used below
+          #
+          version: v0.18.0
 
       - if: env.PUSH == 'true'
         name: Log into registry