diff --git a/.github/workflows/package-sync-nightly.yml b/.github/workflows/package-sync-nightly.yml
index c431f05a..c487a21c 100644
--- a/.github/workflows/package-sync-nightly.yml
+++ b/.github/workflows/package-sync-nightly.yml
@@ -3,7 +3,9 @@ name: Nightly package repository sync
 on:
   schedule:
     # Daily at 23:17
-    - cron: "17 23 * * *"
+    - cron: "00 21 * * *"
+concurrency:
+  group: nightly-package-sync
 env:
   ANSIBLE_FORCE_COLOR: true
 jobs: