diff --git a/.travis.yml b/.travis.yml
index c624623..2c19fae 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,7 @@ python:
   - "3.6"
   - "3.7"
   - "3.8"
+  - "3.9-dev"
   - "nightly"
 jobs:
   allow_failures: