diff --git a/.github/workflows/build-toc.yaml b/.github/workflows/build-toc.yaml
index 3d0aa41..03b7b3f 100644
--- a/.github/workflows/build-toc.yaml
+++ b/.github/workflows/build-toc.yaml
@@ -4,6 +4,10 @@ on:
   push:
     branches:
       - main
+  pull_request:
+    types: [closed]
+    branches:
+      - main
 
 jobs:
   run-script: