diff --git a/.github/workflows/hugo_ci.yaml b/.github/workflows/hugo_ci.yaml
index dfede486..88c75d46 100644
--- a/.github/workflows/hugo_ci.yaml
+++ b/.github/workflows/hugo_ci.yaml
@@ -1,6 +1,10 @@
 name: Hugo Build and Deploy
 
-on: push
+on: 
+  pull_request:
+    types: [opened, reopened, closed]
+    branches: 
+      - 'master'
 
 env:
   BASE_URL: ${{ (github.ref == 'refs/heads/master' && 'gen3.org') || 'alpha.gen3.org' }}