diff --git a/.github/workflows/ci-monitor.yml b/.github/workflows/ci-monitor.yml
index 2641c03f1..d5155e625 100644
--- a/.github/workflows/ci-monitor.yml
+++ b/.github/workflows/ci-monitor.yml
@@ -4,8 +4,6 @@ on:
   schedule:
     # Run every 6 hours at 00:00, 06:00, 12:00, 18:00 UTC
     - cron: '0 */6 * * *'
-  pull_request:
-    branches: [ main ]
   workflow_dispatch:
     inputs:
       limit: