diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index cb41e61..931102c 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -6,8 +6,9 @@ jobs:
       matrix:
         python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13-dev", "pypy-3.8", "pypy-3.9", "pypy-3.10"]
         depset: ["min", "full"]
+        os: [ubuntu-latest, windows-latest, macos-latest]
       fail-fast: false
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout
         uses: actions/checkout@v3