diff --git a/.gitignore b/.gitignore
index 2a7a60d..2ecb5f8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -40,3 +40,5 @@ nosetests.xml
 
 # Ignore ,cover files from coverage tool.
 *,cover
+
+.idea/
diff --git a/.travis.yml b/.travis.yml
index 57024ce..294fb5f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,13 +1,13 @@
+dist: xenial
 language: python
 sudo: false
 python:
-- '3.3'
-- '3.4'
 - '3.5'
-- '3.5-dev'
 - '3.6'
-- '3.6-dev'
-- '3.7-dev'
+- '3.7'
+- '3.8'
+- '3.8-dev'
+- 'nightly'
 env:
 - PYTHONPATH=.
 install: