diff --git a/.travis.yml b/.travis.yml
index 93192a6f..95142d4b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -84,3 +84,7 @@ notifications:
     template:
       - "%{result} %{repository_name} %{build_url}"
       - "#%{build_number} changes: %{compare_url}"
+
+# Only build pull requests and releases, don't build master on pushes,
+# except through api or cron.
+if: type IN (pull_request, api, cron) OR tag IS present