diff --git a/.travis.yml b/.travis.yml
index e332e44f3..4deeb6903 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,7 @@
 ---
+branches:
+  only:
+    - master
 script: cd tests && ./run_ec2 test
 before_install:
   - "sudo apt-get install -y ec2-api-tools"