diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
index 7d6fb52..80f06d5 100644
--- a/.github/workflows/pytest.yml
+++ b/.github/workflows/pytest.yml
@@ -11,7 +11,10 @@ on:
 
 jobs:
   test:
-    runs-on: ubuntu-latest  # this is the only distro available 🙃
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest] # ubuntu is the only distro available 🙃
 
     steps:
       - name: Checkout
diff --git a/tests/conftest.py b/tests/conftest.py
index 071e268..70dc933 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -33,8 +33,9 @@ def download_mdto_xsd(target_dir):
     response = requests.get(xsd_url)
     response.raise_for_status()  # raise error if download failed
 
-    with open(target_dir / xsd_filename, "w") as f:
-        f.write(response.text)
+    # should be response.text and open(file, "w"), but NA is sending incorrect header information
+    with open(target_dir / xsd_filename, "wb") as f:
+        f.write(response.content)
 
 
 @pytest.fixture