diff --git a/.travis.yml b/.travis.yml
index d4c40c8..1226075 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,10 +1,12 @@
-dist: precise
+dist: xenial
 language: python
 python:
   - "2.7"
-  - "3.3"
   - "3.4"
   - "3.5"
+  - "3.6"
+  - "3.7"
+  - "3.8"
 
 # command to install dependencies
 install: