diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4690125d..5406a53a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,13 @@
-## [4.2.0 - Pluginable coders, on Oct XX, 2017](https://github.com/rs/SDWebImage/releases/tag/4.2.0)
+## [4.2.1 - 4.2 Patch, on Oct 31st, 2017](https://github.com/rs/SDWebImage/releases/tag/4.2.1)
+See [all tickets marked for the 4.2.1 release](https://github.com/rs/SDWebImage/milestone/18)
+
+#### Features
+- Feature refactor built-in coders and support animated webp on macOS #2082 (reusable code into `SDWebImageCoderHelper`; `SDWebImageFrame` abstracts animated images frames)
+
+#### Fixes
+- Fixed EXIF orientation method will crash on iOS 7 because it’s an iOS 8 above API #2082
+
+## [4.2.0 - Pluginable coders, on Oct 30th, 2017](https://github.com/rs/SDWebImage/releases/tag/4.2.0)
 See [all tickets marked for the 4.2.0 release](https://github.com/rs/SDWebImage/milestone/16)
 
 #### Features
diff --git a/SDWebImage.podspec b/SDWebImage.podspec
index 0ab70be5..ae74ab0f 100644
--- a/SDWebImage.podspec
+++ b/SDWebImage.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name = 'SDWebImage'
-  s.version = '4.2.0'
+  s.version = '4.2.1'
 
   s.osx.deployment_target = '10.8'
   s.ios.deployment_target = '7.0'
diff --git a/WebImage/Info.plist b/WebImage/Info.plist
index d6051734..9d919f7a 100644
--- a/WebImage/Info.plist
+++ b/WebImage/Info.plist
@@ -15,11 +15,11 @@
 	<key>CFBundlePackageType</key>
 	<string>FMWK</string>
 	<key>CFBundleShortVersionString</key>
-	<string>4.2.0</string>
+	<string>4.2.1</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>4.2.0</string>
+	<string>4.2.1</string>
 	<key>NSPrincipalClass</key>
 	<string></string>
 </dict>