diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9e6ccd3f..e44b1684 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -2,14 +2,19 @@ name: Continuous Integration
 
 on:
   pull_request:
-    branches: ['**']
+    branches: ["**"]
   push:
-    branches: ['main']
+    branches: ["main"]
 
 jobs:
   build:
     name: Build and Test
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest]
+
     steps:
       - uses: actions/checkout@v6
       - uses: actions/setup-java@v5
@@ -22,7 +27,8 @@ jobs:
           scala-cli-version: 1.12.2
       - run: scala-cli fmt --check .
       - run: scala-cli --server=false build.scala
-      - if: github.event_name != 'pull_request'
+
+      - if: github.event_name != 'pull_request' && matrix.os == 'ubuntu-latest'
         uses: peaceiris/actions-gh-pages@v4.0.0
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}