diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b9e1f4904..fee6dd338 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,4 +1,7 @@
-on: [ push ]
+on:
+  pull_request:
+  push:
+  workflow_dispatch:
 
 jobs:
   build_ubuntu:
diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index 76c1b7165..fbffcadfc 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -1,4 +1,5 @@
 on:
+  pull_request:
   push:
   workflow_dispatch: