diff --git a/.travis.yml b/.travis.yml
index 9192ddc..4434ca2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,11 +1,12 @@
 sudo: false
 language: python
+
 python:
-  - "2.6"
   - "2.7"
-  - "3.3"
   - "3.4"
   - "3.5"
+  - "3.9-dev"
+
 install:
   - pip install six blist unittest2 pytz
   - python setup.py install