Upgrade MacOS from HighSierra to Mojave

chenrui333 · chenrui333 · commit a239d4e25d30 · 2019-11-22T18:44:42.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -16,7 +16,7 @@ _linux: &linux
   os: linux
 _osx: &osx
   os: osx
-  osx_image: xcode10.1
+  osx_image: xcode11.2
 _windows:
   os: windows
 
