diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index b7ceb90..0283b04 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -7,7 +7,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: [3.5, 3.6, 3.7, 3.8, pypy3]
+        python-version: [3.5, 3.6, 3.7, 3.8, '3.9.0-alpha - 3.9', pypy3]
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2