diff --git a/.github/workflows/validate-stacks.yaml b/.github/workflows/validate-stacks.yaml
index 61ea21e2e..0e8581fbc 100644
--- a/.github/workflows/validate-stacks.yaml
+++ b/.github/workflows/validate-stacks.yaml
@@ -21,7 +21,7 @@ on:
   pull_request:
     branches: [main]
   schedule:
-    - cron: "*/30 * * * *"
+    - cron: 0 5 * * *
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.number || github.ref }}