diff --git a/.github/workflows/pandoc.yml b/.github/workflows/pandoc.yml
index df74531a..4e14e94d 100644
--- a/.github/workflows/pandoc.yml
+++ b/.github/workflows/pandoc.yml
@@ -1,5 +1,8 @@
 name: panvimdoc
-on: [push]
+on:
+  pull_request:
+    branches:
+      - main
 jobs:
   docs:
     permissions: contents: write