diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..f7dca19
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,19 @@
+name: CI
+
+on:
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-java@v4
+        with:
+          java-version: '25'
+          distribution: 'temurin'
+      - uses: gradle/actions/setup-gradle@v4
+      - name: Run tests
+        working-directory: Roseau-Server
+        run: gradle test