diff --git a/.github/workflows/dag-push-production.yaml b/.github/workflows/dag-push-production.yaml
index a435a2c247b..f1cca868c3a 100644
--- a/.github/workflows/dag-push-production.yaml
+++ b/.github/workflows/dag-push-production.yaml
@@ -15,6 +15,10 @@ env:
   BUCKET: wolfi-production-registry-destination/os/
   SRC_BUCKET: gs://wolfi-production-registry-destination/os/
 
+# Only run one build at a time, to prevent bad signature errors.
+concurrency:
+  group: aarch64-${{ github.ref }}
+
 jobs:
   setup-cluster:
     name: Setup build cluster