diff --git a/.travis.yml b/.travis.yml
index 6b8d100..8d4e97b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,5 @@
 language: objective-c
-osx_image: xcode8
+osx_image: xcode9
 
 script:
-- xcodebuild -workspace TRX.xcworkspace -scheme TRXTests -configuration Debug -destination 'platform=iOS Simulator,name=iPhone 7,OS=10.0' test
+- xcodebuild -workspace TRX.xcworkspace -scheme TRXTests -configuration Debug -destination 'platform=iOS Simulator,name=iPhone 7,OS=11.0' test