test on Python 3.6 for Windows, and Python 3.9 for Ubuntu
@@ -89,9 +89,9 @@ jobs:
include:
- os: 'ubuntu'
- python-version: 3.8
+ python-version: 3.9
- os: 'windows'
- python-version: 3.7
+ python-version: 3.6
- os: 'macos'
python-version: 3.8
