diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6f8f105..8916e52 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,10 +8,11 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
     strategy:
       matrix:
         java-version: [ 8, 11, 17 ]
+        os: [ubuntu-latest, windows-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v2
     - name: Set up JDK ${{ matrix.java-version }}