diff --git a/CHANGELOG.md b/CHANGELOG.md
index 36eb900..dd452ff 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,10 +7,30 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
-[Unreleased]: https://github.com/althonos/proteinogenic/compare/v0.1.0...HEAD
+[Unreleased]: https://github.com/althonos/proteinogenic/compare/v0.2.0...HEAD
 
 
-## [v0.1.0] - 2020-01-15
+## [v0.2.0] - 2022-02-17
+
+[v0.2.0]: https://github.com/althonos/proteinogenic/compare/v0.1.0...v0.2.0
+
+### Fixed
+- Kekulization of imidazole cycle of `L-histidine` residues.
+
+### Changed
+- Refactored API to make failible operations return a result.
+- Renamed `AminoAcid::from_code1` to `AminoAcid::from_char`.
+- Renamed `AminoAcid::from_code3` to `AminoAcid::from_code`.
+
+### Added
+- `AminoAcid::as_code` to view the 3-letter code of an `AminoAcid` variant.
+- `L-pyrrolysine`, `dehydroalanine` and `(Z)-dehydrobutyrine` amino acids.
+- Support for cross-link modifications like cystine or lanthionine.
+- Support for head-to-tail homodetic cyclization.
+- Dedicated error type for the new possible errors.
+
+
+## [v0.1.0] - 2022-01-15
 
 [v0.1.0]: https://github.com/althonos/proteinogenic/compare/dfa86e6...v0.1.0
 
diff --git a/Cargo.toml b/Cargo.toml
index 317594e..5d27fcb 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "proteinogenic"
-version = "0.1.0"
+version = "0.2.0"
 edition = "2021"
 authors = ["Martin Larralde <martin.larralde@embl.de>"]
 license = "MIT"