diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index d9bae48d6..f0d2a4b80 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -2,11 +2,12 @@ name: github pages
 
 on:
   push:
-    branches:
-      - master
     paths:
       - docs/**
       - .github/workflows/docs.yml
+  pull_request:
+    branches:
+      - master
 
 jobs:
   build-deploy: