diff --git a/.travis.yml b/.travis.yml
index f4fa0ea..2c50d5e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,8 @@
 language: objective-c
-osx_image: xcode9
+osx_image: xcode10
 before_install:
   - brew update
+  - brew unlink python
   - brew install protobuf
 #  - brew uninstall xctool
 #  - brew install xctool --HEAD