diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9eed57f..3f3a7e4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 
 - Modified frontiers to use `HexString` for ommers
+- Optimized `createTransaction`
 
 ## [0.7.2.0]