diff --git a/.github/workflows/liquid.yml b/.github/workflows/liquid.yml
index 00c51a4..c9101eb 100644
--- a/.github/workflows/liquid.yml
+++ b/.github/workflows/liquid.yml
@@ -1,5 +1,5 @@
 name: Liquid
-on: [push]
+on: [push, pull_request]
 jobs:
   test:
     runs-on: ubuntu-latest