diff --git a/GzipSwift.podspec b/GzipSwift.podspec
index 109ea44..58f4e0d 100644
--- a/GzipSwift.podspec
+++ b/GzipSwift.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name          = "GzipSwift"
-  s.version       = "4.0.2"
+  s.version       = "4.0.3"
   s.summary       = "Swift framework that enables gzip/gunzip Data using zlib."
 
   s.homepage      = "https://github.com/1024jp/GzipSwift"
diff --git a/Project/Info.plist b/Project/Info.plist
index a7aaa5c..0e621fc 100644
--- a/Project/Info.plist
+++ b/Project/Info.plist
@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>FMWK</string>
 	<key>CFBundleShortVersionString</key>
-	<string>4.0.2</string>
+	<string>4.0.3</string>
 	<key>CFBundleVersion</key>
 	<string>$(CURRENT_PROJECT_VERSION)</string>
 	<key>NSHumanReadableCopyright</key>
diff --git a/README.md b/README.md
index 46ed170..d4b5a6f 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 GzipSwift
 ========================
 
-[![Swift](https://img.shields.io/badge/Swift-4.0.0-blue.svg)]()
+[![Swift](https://img.shields.io/badge/Swift-4.0.2-blue.svg)]()
 [![platform](https://img.shields.io/badge/platform-macOS%20|%20iOS%20|%20watchOS%20|%20tvOS%20|%20Linux-blue.svg)]()
 [![Carthage compatible](https://img.shields.io/badge/Carthage-✔-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage)
 [![SPM compatible](https://img.shields.io/badge/SPM-✔-4BC51D.svg?style=flat)](https://swift.org/package-manager/)
@@ -13,7 +13,7 @@ GzipSwift
 __GzipSwift__ is a framework with an extension of Data written in Swift. It enables compress/decompress gzip using zlib.
 
 - __Requirements__: OS X 10.9 / iOS 8 / watchOS 2 / tvOS 9 or later
-- __Swift version__: Swift 4.0.0
+- __Swift version__: Swift 4.0.2
 
 
 ## Usage