diff --git a/.travis.yml b/.travis.yml
index f61651a..8ebce74 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,4 @@
 language: objective-c
-osx_image: xcode8
+osx_image: xcode9
 script:
-- xcodebuild build test -workspace ManagedObjectAdapter.xcworkspace -scheme 'ManagedObjectAdapter iOS' -sdk iphonesimulator -destination 'platform=iOS Simulator,name=iPhone 7,OS=10.0' 
+- xcodebuild build test -workspace ManagedObjectAdapter.xcworkspace -scheme 'ManagedObjectAdapter iOS' -sdk iphonesimulator -destination 'platform=iOS Simulator,name=iPhone X,OS=11.0' 
diff --git a/README.md b/README.md
index dd5042c..c11e56c 100644
--- a/README.md
+++ b/README.md
@@ -31,6 +31,7 @@ protocol ManagedObjectSerializing {
 You can use ManagedObjectAdapter like this:
 
 ```swift
+@objcMembers
 class TestModel: NSObject, ManagedObjectSerializing {
     var id: String?