diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 30cbd8f..02986f6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,5 +1,5 @@
 name: Build LaTeX document
-on: [push]
+on: [push, pull_request]
 jobs:
   build_latex:
     strategy: