diff --git a/.travis.yml b/.travis.yml
index 918240c7..38869bf9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,9 +12,9 @@ matrix:
     - os: osx
       osx_image: xcode8.3   # OS X 10.12
     - os: osx
-      osx_image: xcode9     # OS X 10.13
+      osx_image: xcode9     # OS X 10.12
     - os: osx
-      osx_image: xcode9.1   # OS X 10.13.1
+      osx_image: xcode9.2   # OS X 10.12
     - os: linux
       dist: trusty
       sudo: required