diff --git a/.github/workflows/python-app.yml b/.github/workflows/python-app.yml
index 6e4696aa..75e917e2 100644
--- a/.github/workflows/python-app.yml
+++ b/.github/workflows/python-app.yml
@@ -13,6 +13,9 @@ jobs:
   build:
 
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.7, 3.8, 3.9]
 
     steps:
     - uses: actions/checkout@v2