diff --git a/.travis.yml b/.travis.yml
index 101066a..c774a59 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,7 +2,7 @@
 # * http://www.objc.io/issue-6/travis-ci.html
 # * https://github.com/supermarin/xcpretty#usage
 
-osx_image: xcode9.2
+osx_image: xcode9.4
 language: swift
 env:
   global: