diff --git a/CHANGELOG.md b/CHANGELOG.md
index ea69e87..7859e33 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,7 @@ 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).
 
-## [0.2.1] - 2024-07-18
+## [0.2.1] - Unreleased
 
 - [#66](https://github.com/franziskuskiefer/hpke-rs/pull/66): add support for secp256k1 curve. This adds `DhKemK256 = 0x0016` to the `KemAlgorithms`