diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index ef545ba05..7671c1686 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -4,7 +4,10 @@ on:
   push:
     branches: [ master ]
   pull_request:
-    branches: [ master ]
+    types:
+      - opened
+      - synchronize
+      - reopened
 
   workflow_dispatch: