diff --git a/.travis.yml b/.travis.yml
index 79e1f16..8cf89b5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,4 @@
-osx_image: xcode9
+osx_image: xcode9.3
 language: objective-c
 before_install:
   - brew update