diff --git a/.github/workflows/change-monitor.yml b/.github/workflows/change-monitor.yml
index 9d148ace2e..56ad1242b3 100644
--- a/.github/workflows/change-monitor.yml
+++ b/.github/workflows/change-monitor.yml
@@ -1,9 +1,6 @@
 name: Trigger Target Workflow
 
 on:
-  pull_request:
-    types:
-      - closed
   push:
     branches:
       - main