diff --git a/.github/workflows/push-production.yaml b/.github/workflows/push-production.yaml
index f76a38c22f9..99192f3a3e3 100644
--- a/.github/workflows/push-production.yaml
+++ b/.github/workflows/push-production.yaml
@@ -6,6 +6,10 @@ on:
     paths-ignore: ['README.md']
   workflow_dispatch:
 
+# Only run one build at a time, to prevent bad signature errors.
+concurrency:
+  group: x86-${{ github.ref }}
+
 jobs:
   build:
     name: Build OS packages