Move to xcode6.4, like Fenics

mikaem · mikaem · commit 748ab85734e9 · 2018-09-27T14:01:24.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,7 +1,7 @@
 language: generic
 
 os: osx
-osx_image: xcode8.3
+osx_image: xcode6.4
 
 sudo: false
 
