diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bd6e2265..00f1b413 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,9 +1,11 @@
-on: push
+on:
+  - push
+  - pull_request
 jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Run tests
         run: cd test && ./run-tests
         shell: bash