diff --git a/.travis.yml b/.travis.yml
index 7ee1a278db..1be94515f2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,12 @@ language: python
 # tell travis to cache ~/.cache/pip
 cache: pip
 
+# only build branches we care about (PRs are built seperately)
+branches:
+  only:
+    - master
+    - develop
+
 before_script:
   - git remote set-branches --add origin develop
   - git fetch origin develop