diff --git a/.travis.yml b/.travis.yml
index 8a8e1a04..d7661cb3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -88,27 +88,27 @@ matrix:
 
     # ----- OS X / GCC -----
     - os: osx
-      osx_image: xcode8
+      osx_image: xcode9.3
       env:
        - MATRIX_EVAL="brew update && brew install gcc && CC=gcc-7 && CXX=g++-7" BUILD_TYPE="Debug" DOUBLE_PRECISION="False"
     - os: osx
-      osx_image: xcode8
+      osx_image: xcode9.3
       env:
        - MATRIX_EVAL="brew update && brew install gcc && CC=gcc-7 && CXX=g++-7" BUILD_TYPE="Release" DOUBLE_PRECISION="False"
     - os: osx
-      osx_image: xcode8
+      osx_image: xcode9.3
       env:
        - MATRIX_EVAL="brew update && brew install gcc && CC=gcc-7 && CXX=g++-7" BUILD_TYPE="Debug" DOUBLE_PRECISION="True"
     - os: osx
-      osx_image: xcode8
+      osx_image: xcode9.3
       env:
        - MATRIX_EVAL="brew update && brew install gcc && CC=gcc-7 && CXX=g++-7" BUILD_TYPE="Release" DOUBLE_PRECISION="True"
     - os: osx
-      osx_image: xcode8
+      osx_image: xcode9.3
       env:
        - MATRIX_EVAL="brew update && brew install gcc && CC=gcc-7 && CXX=g++-7" BUILD_TYPE="Debug" DOUBLE_PRECISION="True" LOGGER="True" PROFILER="True"
     - os: osx
-      osx_image: xcode8
+      osx_image: xcode9.3
       env:
        - MATRIX_EVAL="brew update && brew install gcc && CC=gcc-7 && CXX=g++-7" BUILD_TYPE="Release" DOUBLE_PRECISION="True" LOGGER="True" PROFILER="True"