diff --git a/CHANGELOG.md b/CHANGELOG.md
index 536d4b8df..72e7c2fb7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Update EDA notebook ([#96](https://github.com/tinkoff-ai/etna-ts/pull/96), [#114](https://github.com/tinkoff-ai/etna-ts/pull/114))
 - Delete offset from WindowStatisticsTransform ([#111](https://github.com/tinkoff-ai/etna-ts/pull/111))
 - Add Pipeline example in Get started notebook ([#115](https://github.com/tinkoff-ai/etna-ts/pull/115))
+- Internal implementation of BinsegTrendTransform ([#141](https://github.com/tinkoff-ai/etna-ts/pull/141))
 
 ### Fixed
 - Add more obvious Exception Error for forecasting with unfitted model ([#102](https://github.com/tinkoff-ai/etna-ts/pull/102))