diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 02499a1d..0a932fb6 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -20,7 +20,7 @@ env:
   IMAGE_NAME: ${{ github.repository }}
   # tool versions
   # renovate: datasource=github-releases depName=docker/buildx
-  BUILDX_VERSION: v0.20.1
+  BUILDX_VERSION: v0.21.1
   # renovate: datasource=github-releases depName=moby/buildkit
   BUILDKIT_VERSION: v0.19.0