diff --git a/.travis.yml b/.travis.yml
index d1e51e8..a3fa404 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,13 +13,13 @@ matrix:
       sudo: required
       env: BUILD_PLATFORM="Linux_x64" Configuration="Release"
     - os: osx
-      osx_image: xcode8.3
+      osx_image: xcode9.4
       env: BUILD_PLATFORM="Mac_x64" Configuration="Debug"
       cache:
         directories:
           - $HOME/Library/Caches/Homebrew
     - os: osx
-      osx_image: xcode8.3
+      osx_image: xcode9.4
       env: BUILD_PLATFORM="Mac_x64" Configuration="Release"
       cache:
         directories: