diff --git a/.travis.yml b/.travis.yml
index 41c0bc1..f656213 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,6 +11,7 @@ compiler:
 matrix:
   exclude:
     - os: osx
+      osx_image: xcode8.2 # force sierra for cartr/qt4
       compiler: gcc
 
 before_install: