diff --git a/.github/workflows/manifest-generator.yml b/.github/workflows/manifest-generator.yml
index 9555c9b..b0e0c4b 100644
--- a/.github/workflows/manifest-generator.yml
+++ b/.github/workflows/manifest-generator.yml
@@ -1,6 +1,7 @@
 on:
-  - pull_request
-  - push
+  pull_request:
+    branches:
+      - master
 
 jobs:
   test:
@@ -39,7 +40,7 @@ jobs:
       - name: push generated manifest
         uses: EndBug/add-and-commit@v9
         with:
-          add: 'manifest.yml'
+          add: 'manifest.json'
           message: 'chore: update manifest.json'
           committer_name: GitHub Actions
           committer_email: 41898282+github-actions[bot]@users.noreply.github.com