diff --git a/.github/workflows/generate-reference.yml b/.github/workflows/generate-reference.yml
index 9b0a92f6e2..003466b5b8 100644
--- a/.github/workflows/generate-reference.yml
+++ b/.github/workflows/generate-reference.yml
@@ -1,6 +1,8 @@
 name: Generate References
 on: 
-  push:
+  pull_request:
+    types:
+      - closed
     branches:
       - 'master'
     paths: