diff --git a/.travis.yml b/.travis.yml
index b62848ce..94ba83f5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,11 @@ python:
   - 2.7
   - 3.6
 
+branches:
+  only:
+    - gh-pages
+    - /.*/
+
 before_script:
   - git clone https://github.com/common-workflow-language/cwltool.git cwltool && pip install ./cwltool
   - git clone https://github.com/common-workflow-language/cwltest.git cwltest && pip install ./cwltest