update travis config (#662)

diff --git a/CI/.travis.yml b/CI/.travis.yml
index 8e9289b1908d18294cd52edec231d0be711043dd..f5fed7a62b9e67718d3811645466e719af660bb2 100644 (file)
--- a/CI/.travis.yml
+++ b/CI/.travis.yml
@@ -12,9 +12,9 @@ matrix:
     - os: osx
       osx_image: xcode8.3   # OS X 10.12
     - os: osx
-      osx_image: xcode9     # OS X 10.12
+      osx_image: xcode9.4   # OS X 10.13
     - os: osx
-      osx_image: xcode9.2   # OS X 10.12
+      osx_image: xcode10    # OS X 10.13
     - os: linux
       dist: trusty
       sudo: required