diff --git a/.github/workflows/ant.yml b/.github/workflows/ant.yml
index a0a91efa9..11b9bd1a5 100644
--- a/.github/workflows/ant.yml
+++ b/.github/workflows/ant.yml
@@ -1,6 +1,8 @@
 name: Java CI
 
-on: [push]
+on:
+  push:
+  pull_request:
 
 jobs:
   build: