diff --git a/CHANGELOG.md b/CHANGELOG.md
index b72406ad..e4258ce4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,16 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### rten
+
+ - Support `count_include_pad` attr in AveragePool operator (09ecb729)
+
+### rten-imageproc
+
+ - Optimized `find_contours` for large images (c471a6c, 7a14f43)
+
 ## [0.3.1] - 2024-01-23
 
  - Updated rten-vecmath dependency to latest version