diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 906fab06..0f3e0a66 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -4,8 +4,7 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
-on: 
-  workflow_dispatch:
+on: pull_request
 
 jobs:
   build: