diff --git a/.travis.yml b/.travis.yml
index 36ea982..f749a6e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,9 +15,10 @@ matrix:
     include:
         - os: osx
           compiler: clang
+          osx_image: xcode9
           env:
               - DEPLOYMENT=1
-              - USE_BUNDLED_BOOST=0
+              - USE_BUNDLED_BOOST=1
               - USE_BUNDLED_CMARK=0
         - os: linux
           compiler: gcc