diff --git a/.github/workflows/test-pypi-install.yml b/.github/workflows/test-pypi-install.yml
index c4df78b..1793f92 100644
--- a/.github/workflows/test-pypi-install.yml
+++ b/.github/workflows/test-pypi-install.yml
@@ -1,5 +1,6 @@
 name: Test PyPI install
 on:
+  pull_request:
   workflow_dispatch:
   schedule:
     # * is a special character in YAML so you have to quote this string