diff --git a/.swift-version b/.swift-version
index 389f774..8012ebb 100644
--- a/.swift-version
+++ b/.swift-version
@@ -1 +1 @@
-4.0
\ No newline at end of file
+4.2
\ No newline at end of file
diff --git a/.travis.yml b/.travis.yml
index 37298a1..5ad96c6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,4 @@
-osx_image: xcode9
+osx_image: xcode10
 language: objective-c
 install:
 - gem install cocoapods -v 1.3.1 --no-document
@@ -8,4 +8,4 @@ before_script:
 - pod install
 
 script:
-- xcodebuild -workspace Popover.xcworkspace -scheme "PopoverExample" -destination 'platform=iOS Simulator,OS=11.0,name=iPhone 8' build test | xcpretty
\ No newline at end of file
+- xcodebuild -workspace Popover.xcworkspace -scheme "PopoverExample" -destination 'platform=iOS Simulator,OS=12.0,name=iPhone 8' build test | xcpretty
\ No newline at end of file
diff --git a/Popover.podspec b/Popover.podspec
index ea88dd9..d379565 100644
--- a/Popover.podspec
+++ b/Popover.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = "Popover"
-  s.version          = "1.2.0"
+  s.version          = "1.2.1"
   s.summary          = "Popover is a balloon library like facebook app. It is written in pure swift."
   s.homepage         = "https://github.com/corin8823"
   s.license          = { :type => "MIT", :file => "LICENSE" }
@@ -13,6 +13,6 @@ Pod::Spec.new do |s|
 
   s.source_files = 'Classes/*.swift'
   s.pod_target_xcconfig = {
-    'SWIFT_VERSION' => '4.0',
+    'SWIFT_VERSION' => '4.2',
   }
 end