diff --git a/.swift-version b/.swift-version
index 8a36cd1..bf77d54 100644
--- a/.swift-version
+++ b/.swift-version
@@ -1 +1 @@
-4.1
\ No newline at end of file
+4.2
diff --git a/.travis.yml b/.travis.yml
index 218375b..b1667be 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,5 @@
 language: objective-c
-osx_image: xcode9.3
+osx_image: xcode10
 branches:
   only:
     - master
@@ -11,9 +11,10 @@ env:
   - IOS_FRAMEWORK_SCHEME="JZCalendarWeekView"
   - IOS_SDK=iphonesimulator
   matrix:
-  - DESTINATION="OS=11.3,name=iPhone X"          SCHEME="$IOS_FRAMEWORK_SCHEME"   SDK="$IOS_SDK"      RUN_TESTS="YES"
+  - DESTINATION="OS=12.0,name=iPhone XS MAX"          SCHEME="$IOS_FRAMEWORK_SCHEME"   SDK="$IOS_SDK"      RUN_TESTS="YES"
+  - DESTINATION="OS=11.4.1,name=iPhone X"   SCHEME="$IOS_FRAMEWORK_SCHEME"   SDK="$IOS_SDK"      RUN_TESTS="YES"
   - DESTINATION="OS=10.3.1,name=iPhone 7 Plus"   SCHEME="$IOS_FRAMEWORK_SCHEME"   SDK="$IOS_SDK"      RUN_TESTS="YES"
-  - DESTINATION="OS=9.3,name=iPhone 6"           SCHEME="$IOS_FRAMEWORK_SCHEME"   SDK="$IOS_SDK"      RUN_TESTS="YES"
+  - DESTINATION="OS=9.3,name=iPhone 6s"           SCHEME="$IOS_FRAMEWORK_SCHEME"   SDK="$IOS_SDK"      RUN_TESTS="YES"
 
 before_install:
   - gem install xcpretty --no-rdoc --no-ri --no-document --quiet