diff --git a/CHANGELOG.md b/CHANGELOG.md
index 32a4ffe..273c2e2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,11 @@ 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]
+
+## Fixed
+- `BitBuilder.writeVarInt` bytes size calculation (thx @Gusarich)
+
 ## [0.59.0] - 2024-10-09
 
 ## Fixed