diff --git a/CHANGELOG.md b/CHANGELOG.md
index 163ec0d..9531680 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,10 @@
 # Change Log
 All notable changes to this project will be documented in this file, following the suggestions of [Keep a CHANGELOG](http://keepachangelog.com/). This project adheres to [Semantic Versioning](http://semver.org/).
 
+## v1.1.2 - 2018-05-21
+### Changed
+- msgpack to new 0.5.6
+
 ## v1.1.1 - 2018-04-27
 ### Fixed
 - Imported BASE_URL_REDUCED to download reduced files
diff --git a/README.md b/README.md
index 5d80ab3..0a119e4 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 [![Build Status](https://travis-ci.org/rcsb/mmtf-python.svg?branch=master)](https://travis-ci.org/rcsb/mmtf-python)
 [![Code Health](https://landscape.io/github/rcsb/mmtf-python/master/landscape.svg?style=flat)](https://landscape.io/github/rcsb/mmtf-python/master)
-[![Version](http://img.shields.io/badge/version-1.1.1-blue.svg?style=flat)](https://github.com/rcsb/mmtf-python/)
+[![Version](http://img.shields.io/badge/version-1.1.2-blue.svg?style=flat)](https://github.com/rcsb/mmtf-python/)
 [![License](http://img.shields.io/badge/license-Apache%202.0-blue.svg?style=flat)](https://github.com/rcsb/mmtf-python/blob/master/LICENSE.txt)
 [![Changelog](https://img.shields.io/badge/changelog--lightgrey.svg?style=flat)](https://github.com/rcsb/mmtf-python/blob/master/CHANGELOG.md)