diff --git a/CHANGELOG.md b/CHANGELOG.md
index da95d58..0b5f11a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 0.9
+
+* [#43](https://github.com/Tarmil/FSharp.SystemTextJson/issues/43): In deserialization, allow omitting fields that are optional.
+
 ## 0.8
 
 * [#30](https://github.com/Tarmil/FSharp.SystemTextJson/issues/30): Unwrap `'T voption` with `JsonUnionEncoding.UnwrapOption`.