diff --git a/CHANGELOG.md b/CHANGELOG.md
index 125cae6..0a27341 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Changed
+
+- Refined `README.md`
+
 ## [2.2.0] – 2018-06-26
 
 ### Changed
diff --git a/README.md b/README.md
index 8412cf3..1e1231e 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,6 @@
-# java-diff-utils [![Build Status](https://travis-ci.org/java-diff-utils/java-diff-utils.svg?branch=master)](https://travis-ci.org/java-diff-utils/java-diff-utils)
+# (outdated) java-diff-utils [![Build Status](https://travis-ci.org/java-diff-utils/java-diff-utils.svg?branch=master)](https://travis-ci.org/java-diff-utils/java-diff-utils) [![Maven Central](https://maven-badges.herokuapp.com/maven-central/io.github.java-diff-utils/java-diff-utils/badge.svg)](https://maven-badges.herokuapp.com/maven-central/io.github.java-diff-utils/java-diff-utils)  [![No Maintenance Intended](http://unmaintained.tech/badge.svg)](http://unmaintained.tech/)
+
+> **The maintained successor if this library is https://github.com/java-diff-utils/java-diff-utils**
 
 > A library for computing diffs, applying patches, generation side-by-side view in Java.
 
@@ -7,9 +9,6 @@
 The main reason for creating this library was the lack of easy-to-use libraries with all the usual features necessary for working with diff files.
 Originally it was inspired by the [JRCS library](https://bitbucket.org/apalala/jrcs) and its nice diff module design.
 
-**Original code and docs were forked from:** [java-diff-utils](https://code.google.com/p/java-diff-utils/).
-The original author created his own fork at <https://github.com/dnaumenko/java-diff-utils>.
-
 ## Main Features
 
 * Computing the difference between two chunks of text.
@@ -39,6 +38,16 @@ This library implements Myers' diff algorithm, but it is modular so it is easy t
 
 * In Spanish: [Comparar Ficheros java-diff-utils](https://www.adictosaltrabajo.com/tutoriales/comparar-ficheros-java-diff-utils/)
 
+## Other variants of this library
+
+The library was originally hosted on Google Code at <https://code.google.com/p/java-diff-utils/>.
+This library is a fork originally created by @KengoTODA ([published on maven central](https://mvnrepository.com/artifact/jp.skypencil.java-diff-utils/diffutils) using the group id `jp.skypencil.java-diff-utils`) and enhanced by @bkromhout.
+
+Since GitHub does not connect forks based on Google Code, other variants appeared in parallel:
+
+- https://github.com/dnaumenko/java-diff-utils - Created by the original Google Code maintainer
+- https://github.com/wumpz/java-diff-utils - Created from the Google Code repository [starting in 2017](https://github.com/wumpz/java-diff-utils/commit/42fde56154afd92d2b9ef8e088185e7af0230cee). Now maintained at http://github.com/java-diff-utils/java-diff-utils.
+
 ## License
 
 This work is licensed under The Apache Software License, Version 1.1.
diff --git a/build.gradle b/build.gradle
index f8a76b1..c43cdbd 100644
--- a/build.gradle
+++ b/build.gradle
@@ -4,7 +4,7 @@ apply plugin: 'signing'
 
 group = 'io.github.java-diff-utils'
 archivesBaseName = 'java-diff-utils'
-version = '2.2.0'
+version = '2.2.1-SNAPSHOT'
 
 sourceCompatibility = '1.7'
 targetCompatibility = '1.7'