diff --git a/.swift-version b/.swift-version
index 8012ebb..8336407 100644
--- a/.swift-version
+++ b/.swift-version
@@ -1 +1 @@
-4.2
\ No newline at end of file
+5.1
\ No newline at end of file
diff --git a/.travis.yml b/.travis.yml
index 9c41f9a..c3200f1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,7 @@
-osx_image: xcode10.2
+osx_image: xcode11.0
 language: objective-c
 install:
-- gem install cocoapods -v 1.3.1 --no-document
+- gem install cocoapods -v 1.8.0 --no-document
 
 before_script:
 - cd Example
diff --git a/LICENSE b/LICENSE
index 27a0916..f534f41 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2017 corin8823 <yusuke_takahashi@cyberagent.co.jp>
+Copyright (c) 2020 corin8823 <yusuke_takahashi@cyberagent.co.jp>
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/Popover.podspec b/Popover.podspec
index 8e0612b..0b601e1 100644
--- a/Popover.podspec
+++ b/Popover.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = "Popover"
-  s.version          = "1.2.3"
+  s.version          = "1.3.0"
   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" }
diff --git a/README.md b/README.md
index 7bd840d..ef25f8a 100644
--- a/README.md
+++ b/README.md
@@ -41,11 +41,8 @@ popover.show(aView, fromView: self.leftBottomButton)
 ```
 
 ## Requirements
-- iOS 8.0+
-- Swift 4
-
-If you use Swift 3.0, try Popover 1.1.0.
-If you use Swift 2.2 or 2.3, try Popover 0.9.1.
+- iOS 9.0+
+- Swift 5
 
 ## Installation