diff --git a/.github/workflows/codex-security-daily.yml b/.github/workflows/codex-security-daily.yml
index c17b1e9..e56ba4b 100644
--- a/.github/workflows/codex-security-daily.yml
+++ b/.github/workflows/codex-security-daily.yml
@@ -2,7 +2,7 @@ name: Codex Security daily scan
 
 on:
   schedule:
-    - cron: "31 6 * * *"
+    - cron: "31 6 * * 0"
   workflow_dispatch:
 
 permissions: {}