diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index c2c9aa5..edb1fff 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -1,11 +1,17 @@
 name: JRuby Build
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+
 jobs:
   build:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby: [jruby-9.2.18.0, jruby-head]
+        ruby: [jruby-9.4.9.0, jruby-head]
     steps:
       - run: echo "The job was automatically triggered by a ${{ github.event_name }} event."
       - run: echo "This job is now running on a ${{ runner.os }} server hosted by GitHub!"