diff --git a/.github/workflows/python.yml b/.github/workflows/python.yml
index 3aabee87..7a4b996e 100644
--- a/.github/workflows/python.yml
+++ b/.github/workflows/python.yml
@@ -5,9 +5,10 @@ on: [ push ]
 jobs:
   build:
 
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
     strategy:
       matrix:
+        os: [ ubuntu-latest, macos-latest, windows-latest ]
         python-version: [ 3.6, 3.7, 3.8, 3.9 ]
 
     steps: