diff --git a/CHANGELOG.md b/CHANGELOG.md
index 26df52f..d6473bd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+## [1.0.1](https://github.com/codingatty/Plumage/releases/tag/V1.0.1) - 2016-05-20 
+### Bug fix only:
+- Definitions for ``MarkEventDate`` and ``MarkEventDateTruncated`` definitions were reversed; the reversal was actually harmless, because in ST96, there's no truncation needed for ``MarkEventDate``, but I just wanted to have a clean ST.96 1_D3 version before I add ST.96 V2.2.1 support)
+
 ## [1.0.0](https://github.com/codingatty/Plumage/releases/tag/V1.0.0) - 2016-05-12 (*And Dream of Sheep*)
 ### Added
 - Initial release of XSLT transforms used in all implementations of Plumage.