diff --git a/.github/workflows/run_pytest.yml b/.github/workflows/run_pytest.yml
index 465292a..27459f8 100644
--- a/.github/workflows/run_pytest.yml
+++ b/.github/workflows/run_pytest.yml
@@ -5,18 +5,18 @@ on: [push]
 jobs:
   build:
 
-    runs-on: ubuntu-latest
     strategy:
-      max-parallel: 3
+      max-parallel: 4
       matrix:
-        python-version: [3.5, 3.6, 3.7]
-
+        os: [ubuntu-latest, windows-latest]
+        python-version: [3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7]
+    runs-on: ${{matrix.os}}
     steps:
     - uses: actions/checkout@v1
-    - name: Set up Python ${{ matrix.python-version }}
+    - name: Set up Python ${{matrix.python-version}} at ${{matrix.os}}
       uses: actions/setup-python@v1
       with:
-        python-version: ${{ matrix.python-version }}
+        python-version: ${{matrix.python-version}}
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip