diff --git a/.travis.yml b/.travis.yml
index e4cc8e4be..0b08f1ad6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,4 @@
-osx_image: xcode9.2
+osx_image: xcode8.3
 language: objective-c
 xcode_project: Cog.xcodeproj
 xcode_scheme: Cog