diff --git a/.travis.yml b/.travis.yml
index 79afe10..be759da 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -40,6 +40,8 @@ jobs:
       env: TOXENV=py36-pytestlatest
     - python: "3.7"
       env: TOXENV=py37-pytestlatest
+    - python: "3.9-dev"
+      env: TOXENV=py39-pytestlatest
     - python: "3.8"
       env: TOXENV=py38-pytestmaster
 
diff --git a/tox.ini b/tox.ini
index 584d3ed..d532a2f 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,7 +1,7 @@
 [tox]
 envlist=
   linting
-  py{35,36,37,38}-pytestlatest
+  py{35,36,37,38,39}-pytestlatest
   py38-pytestmaster
 
 [testenv]