diff --git a/.github/workflows/runtests.yml b/.github/workflows/runtests.yml
index d730d54..6801adb 100644
--- a/.github/workflows/runtests.yml
+++ b/.github/workflows/runtests.yml
@@ -9,15 +9,19 @@ on:
 jobs:
   runtests:
     runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v3
-    - name: Set up Python
-      uses: actions/setup-python@v4
-      with:
-        python-version: '3.10'
-    - name: Install dependencies
-      run: |
-        pip install -r requirements-dev.txt
-    - name: Run tests
-      run: |
-        tox
+    strategy:
+      matrix:
+        python-version: ['3.8', '3.9', '3.10' ]
+
+      steps:
+        - uses: actions/checkout@v3
+        - name: Set up Python ${{ matrix.python-version }}
+          uses: actions/setup-python@v4
+          with:
+            python-version: ${{ matrix.python-version }}
+        - name: Install dependencies
+          run: |
+            pip install -r requirements-dev.txt
+        - name: Run tests
+          run: |
+            tox