diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6b0875a..8e11319 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -2,11 +2,21 @@ name: ci-python
 on: [pull_request, push]
 jobs:
   py:
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
           python-version: '3.12'
-      - run: python -m pip install -e . || true
-      - run: python -m pytest || true
+      - name: Upgrade pip
+        run: python -m pip install --upgrade pip
+      - name: Install package (non-Windows)
+        if: runner.os != 'Windows'
+        run: python -m pip install -e ".[dev]"
+      - name: Install package (Windows)
+        if: runner.os == 'Windows'
+        run: python -m pip install --trusted-host pypi.org --trusted-host files.pythonhosted.org -e ".[dev]"
+      - run: python -m pytest