diff --git a/.travis.yml b/.travis.yml
index 7c7df19..a45e418 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,10 @@
 language: python
-python: "3.4"
+python:
+  - "3.3"
+  - "3.4"
+  - "3.5"
+  - "3.5-dev" # 3.5 development branch
+  - "nightly" # currently points to 3.6-dev
 install: pip install  --process-dependency-links dnsdiag
 script: nosetests dnstraceroute.py