diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 659e7256..35f2faee 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -18,15 +18,25 @@ concurrency:
 
 jobs:
   test:
-    name: ${{ matrix.environment }}-build
-    runs-on: ubuntu-latest
+    name: ${{ matrix.os }}-${{ matrix.environment }}-build
+    runs-on: ${{ matrix.os }}
     defaults:
       run:
         shell: bash -l {0}
     strategy:
       fail-fast: false
       matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
         environment: [test-py311, test-py312, min-deps, minio]
+        # Is it a draft Pull Request (true or false)?
+        isDraft:
+          - ${{ github.event.pull_request.draft }}
+        # Only run jobs on Ubuntu for draft PRs
+        exclude:
+          - os: macos-latest
+            isDraft: true
+          - os: windows-latest
+            isDraft: true
     steps:
       - uses: actions/checkout@v4
       - uses: prefix-dev/setup-pixi@v0.8.3
diff --git a/pyproject.toml b/pyproject.toml
index aeafacb7..7bc51705 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -206,6 +206,7 @@ readthedocs = { cmd = "rm -rf $READTHEDOCS_OUTPUT/html && cp -r site $READTHEDOC
 [tool.pixi.feature.minio.tasks]
 run-tests = { cmd = "pytest virtualizarr/tests/test_manifests/test_store.py virtualizarr/tests/test_parsers/test_hdf/test_hdf_manifest_store.py --run-minio-tests --run-network-tests --verbose" }
 run-tests-xml-cov = { cmd = "pytest virtualizarr/tests/test_manifests/test_store.py virtualizarr/tests/test_parsers/test_hdf/test_hdf_manifest_store.py --run-minio-tests --run-network-tests --verbose --cov-report=xml" }
+run-tests-including-slow= { cmd = "pytest virtualizarr/tests/test_manifests/test_store.py virtualizarr/tests/test_parsers/test_hdf/test_hdf_manifest_store.py --run-minio-tests --run-network-tests --run-slow-tests --verbose --cov-report=xml" }
 
 [tool.setuptools_scm]
 fallback_version = "9999"