diff --git a/.github/workflows/release-drafter.yml b/.github/workflows/release-drafter.yml
index ed2dd063..e472de8c 100644
--- a/.github/workflows/release-drafter.yml
+++ b/.github/workflows/release-drafter.yml
@@ -4,13 +4,11 @@ on:
   push:
     branches:
       - main
-  pull_request:
-    types: [opened, reopened, synchronize]
   workflow_dispatch:
 
 jobs:
   update_release_draft:
-    if: ${{ !contains(github.head_ref, 'doc/changelog-update-') }}
+    if: ${{ !contains(github.head_ref, 'doc/changelog-update-') } && startsWith(github.event.head_commit.message, 'Merge pull request')}
     permissions:
       contents: write
       pull-requests: write