diff --git a/shippable.yml b/shippable.yml
index 96df3e63..930b1693 100644
--- a/shippable.yml
+++ b/shippable.yml
@@ -1,7 +1,11 @@
 language: go
 
 go:
-  - 1.10
+  - "1.10"
+
+branches:
+  only:
+    - master
 
 build:
   ci: