diff --git a/.github/workflows/test_changelog.yml b/.github/workflows/test_changelog.yml
index 6850b82b..22c7b813 100644
--- a/.github/workflows/test_changelog.yml
+++ b/.github/workflows/test_changelog.yml
@@ -2,7 +2,7 @@ name: Test Changelog Generation
 
 on:
   pull_request:
-    types: [opened, synchronize]
+    branches: [master]
 
 jobs:
   update-changelog: