diff --git a/.github/workflows/python_build.yaml b/.github/workflows/python_build.yaml
index 8c2d126d..e345f15f 100644
--- a/.github/workflows/python_build.yaml
+++ b/.github/workflows/python_build.yaml
@@ -1,6 +1,6 @@
 name: Build
 
-on: [push]
+on: [pull_request, push]
 
 jobs:
   sdist: