diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 4a7e8ad..69a6313 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -18,9 +18,10 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - {name: Linux, python: '3.8', os: ubuntu-latest, tox: py38}
-          - {name: Windows, python: '3.7', os: windows-latest, tox: py38}
-          - {name: Mac, python: '3.8', os: macos-latest, tox: py38}
+          - {name: Linux, python: '3.9', os: ubuntu-latest, tox: py39}
+          - {name: Windows, python: '3.9', os: windows-latest, tox: py39}
+          - {name: Mac, python: '3.9', os: macos-latest, tox: py39}
+          - {name: '3.8', python: '3.8', os: ubuntu-latest, tox: py38}
           - {name: '3.7', python: '3.7', os: ubuntu-latest, tox: py37}
           - {name: '3.6', python: '3.6', os: ubuntu-latest, tox: py36}
           - {name: '2.7', python: '2.7', os: ubuntu-latest, tox: py27}