diff --git a/.travis.yml b/.travis.yml
index 90bb305..62d57ff 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,5 @@
 language: objective-c
-osx_image: xcode8
+osx_image: xcode9
 xcode_workspace: ShadowsocksX-NG.xcworkspace
 xcode_scheme: ShadowsocksX-NG
 script: set -o pipefail && xcodebuild test -workspace ShadowsocksX-NG.xcworkspace -scheme ShadowsocksX-NG|xcpretty