1 files changed, 1 insertions, 0 deletions

diff --git a/tox.ini b/tox.ini
index 309584355..369d4afe6 100644
--- a/tox.ini
+++ b/tox.ini
@@ -22,6 +22,7 @@ basepython =
     py36: {env:PYTHON:python3.6}
     py37: {env:PYTHON:python3.7}
     py38: {env:PYTHON:python3.8}
+    py39: {env:PYTHON:python3.9}
 pip_version = pip
 deps =
     -r{toxinidir}/requirements.txt