diff --git a/.travis.yml b/.travis.yml
index 27ef6c8..58f8662 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,7 @@ matrix:
       sudo: required
       env: SWIFT_SNAPSHOT=4.0.2
     - os: osx
-      osx_image: xcode9
+      osx_image: xcode9.1
       sudo: required
       env: SWIFT_SNAPSHOT=4.0.2