diff --git a/.travis.yml b/.travis.yml
index d5a7a07fb..a91034f4d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,9 +1,12 @@
 language: python
 python: 2.7
 install:
-- pip install tox
+  - pip install tox
 script:
-- tox
+  - tox
+branches:
+  only:
+    - master
 notifications:
   irc:
     channels: