diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3a7e5bad..02f1b7e6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -44,7 +44,7 @@ All notable changes to this project will be documented in this file, in reverse
 
 ### Fixed
 
-- Nothing.
+- [#103](https://github.com/laminas/laminas-mail/pull/103) fixes issues on Windows whereby the "Subject" and "To" headers were duplicated.
 
 ## 2.12.1 - 2020-08-05