diff --git a/CHANGELOG.md b/CHANGELOG.md
index 75ce739..930fac5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## 1.5.0
+- Thanks to [bobaxix](https://github.com/bobaxix) both KOI8-R as well as KOI8-U codecs are now supported.
+- Add support for [big5](https://en.wikipedia.org/wiki/Big5) encoding by forking https://github.com/douasin/big5-dart.
+- Restructure the package to hide implementation details - in doubt `import 'package:enough_convert/enough_convert.dart';`.
+- Improve documentation and code style
+
 ## 1.4.0
 - Thanks to [moheb2000](https://github.com/moheb2000) now the Windows-1256 codec (Persian) works as expected.
 
diff --git a/README.md b/README.md
index 49347cb..2a30bc8 100644
--- a/README.md
+++ b/README.md
@@ -53,7 +53,7 @@ Add this dependency your pubspec.yaml file:
 
 ```
 dependencies:
-  enough_convert: ^1.3.0
+  enough_convert: ^1.5.0
 ```
 The latest version or `enough_convert` is [![enough_convert version](https://img.shields.io/pub/v/enough_convert.svg)](https://pub.dartlang.org/packages/enough_convert).
 
diff --git a/pubspec.yaml b/pubspec.yaml
index 7a57421..684708b 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: enough_convert
-description: Support for character encodings / charsets / codecs missing from `dart:convert` - ISO 8859 / Latin, Windows, GBK, and KOI8 R/U.
-version: 1.4.0
+description: Support for character encodings / charsets / codecs missing from `dart:convert` - ISO 8859 / Latin, Windows, GBK, Big5, and KOI8 R/U.
+version: 1.5.0
 homepage: https://github.com/Enough-Software/enough_convert
 
 environment: