diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 7ed18f40..09383301 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -9,8 +9,8 @@ jobs:
     strategy:
       max-parallel: 4
       matrix:
-        os: [macos-10.15]
-        python-version: [3.7, 3.8, 3.9]
+        os: [macos-10.15, macos-11]
+        python-version: [3.7, 3.8, 3.9, 3.10-dev]
 
     steps:
     - uses: actions/checkout@v1