diff --git a/.github/workflows/lint-and-test.yaml b/.github/workflows/lint-and-test.yaml
index 67e6fdfd..f4ea34d7 100644
--- a/.github/workflows/lint-and-test.yaml
+++ b/.github/workflows/lint-and-test.yaml
@@ -15,7 +15,9 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Setup Python
-        uses: actions/setup-python@v3
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.x'
 
       - run: pip install -r requirements-dev.txt
 
@@ -24,12 +26,18 @@ jobs:
 
   pytest:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [ '3.x', '3.9' ]
+    name: Test python ${{ matrix.python-version }}
     steps:
       - name: Checkout
         uses: actions/checkout@v3
 
       - name: Setup Python
-        uses: actions/setup-python@v3
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
 
       - run: pip install -r requirements-dev.txt