diff --git a/.github/workflows/tox.yml b/.github/workflows/tox.yml
index edeee10..071899c 100644
--- a/.github/workflows/tox.yml
+++ b/.github/workflows/tox.yml
@@ -8,7 +8,7 @@ jobs:
     strategy:
       max-parallel: 5
       matrix:
-        python-version: [3.6, 3.7, 3.8]
+        python-version: [3.6, 3.7, 3.8, 3.9]
 
     steps:
     - uses: actions/checkout@v1