diff --git a/hkdf/CHANGELOG.md b/hkdf/CHANGELOG.md
index 4e8c321..d2ce4f3 100644
--- a/hkdf/CHANGELOG.md
+++ b/hkdf/CHANGELOG.md
@@ -4,6 +4,14 @@ 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
+### Breaking changes
+- Removed `std` crate feature ([#105])
+- Bump MSRV to 1.81 ([#105])
+- Bump `hmac` dependency to v0.13
+
+[#105]: https://github.com/RustCrypto/KDFs/pull/105
+
 ## 0.12.3 (2022-02-17)
 ### Fixed
 - Minimal versions build ([#63])