diff --git a/.github/workflows/label_merge_conflicts.yml b/.github/workflows/label_merge_conflicts.yml
index c01b5e9e04..b1253510ae 100644
--- a/.github/workflows/label_merge_conflicts.yml
+++ b/.github/workflows/label_merge_conflicts.yml
@@ -1,8 +1,8 @@
 name: 'Check for merge conflicts'
 on:
   schedule:
-    # run this Action every 15 minutes
-    - cron:  '*/15 * * * *'
+    # run this Action every 12 hours
+    - cron:  '0 */12 * * *'
 jobs:
   triage:
     runs-on: ubuntu-18.04