diff --git a/.travis.yml b/.travis.yml
index 04043f651..a25bf738d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,6 +8,10 @@ services:
 
 install: true
 
+branches:
+  only:
+    - master
+
 # Stop default database instances here to avoid port conflicts.
 before_script:
   - sudo service mysql stop