diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index c2f2660..66455f5 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -4,11 +4,13 @@ on: [push]
 
 jobs:
   build:
-    runs-on: ubuntu-18.04
     strategy:
       fail-fast: false
       matrix:
-        python-version: [2.7, 3.4, 3.5, 3.6, 3.7, 3.8]
+        python-version: [2.7, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, "3.10"]
+        os: [ubuntu-18.04, windows-2019]
+
+    runs-on: ${{ matrix.os }}
 
     steps:
     - uses: actions/checkout@v2