diff --git a/.github/workflows/rebase-onto-upstream.yml b/.github/workflows/rebase-onto-upstream.yml
index e80222781b7..90b3b53aa0f 100644
--- a/.github/workflows/rebase-onto-upstream.yml
+++ b/.github/workflows/rebase-onto-upstream.yml
@@ -3,7 +3,7 @@ name: Rebase onto upstream
 on:
   workflow_dispatch:
   schedule:
-    - cron: '0 8 * * 5'
+    - cron: '0 8 1,15 * *'
 
 jobs:
   push: