diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index f90dcd4..a28dbfb 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -68,7 +68,7 @@ jobs:
                   labels: ${{ steps.meta.outputs.labels }}
                   cache-from: type=gha
                   cache-to: type=gha,mode=max
-                  platforms: linux/amd64,linux/arm64
+                  platforms: ${{ startsWith(github.ref, 'refs/tags/') && 'linux/amd64,linux/arm64' || 'linux/amd64' }}
 
             - name: Build smoke image (PR only)
               if: github.event_name == 'pull_request'