diff --git a/CHANGELOG.md b/CHANGELOG.md
index c5c336c7eb..5817fff35a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,25 @@
 # Changelog
 
+## 0.2.1 (2024-03-06)
+
+### Documentation
+
+- HUGR spec copyediting ([#843](https://github.com/CQCL/hugr/pull/843))
+- Add builder module docs + example ([#853](https://github.com/CQCL/hugr/pull/853))
+- Add note on serialized hugr node order ([#849](https://github.com/CQCL/hugr/pull/849))
+
+### Features
+
+- Arbitrary types in the yaml extension definition ([#839](https://github.com/CQCL/hugr/pull/839))
+- Make all core types serializable ([#850](https://github.com/CQCL/hugr/pull/850))
+- Don't include empty type args in Display ([#857](https://github.com/CQCL/hugr/pull/857))
+- Mermaid renderer for hugrs ([#852](https://github.com/CQCL/hugr/pull/852))
+
+### Refactor
+
+- Add `From` conversion from ExtensionId to ExtensionSet ([#855](https://github.com/CQCL/hugr/pull/855))
+- Remove clone in `ExtensionSet::union` ([#859](https://github.com/CQCL/hugr/pull/859))
+
 ## 0.2.0 (2024-02-20)
 
 ### Documentation
diff --git a/Cargo.toml b/Cargo.toml
index 23f263892d..cfd27ad090 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "quantinuum-hugr"
-version = "0.2.0"
+version = "0.2.1"
 edition = "2021"
 rust-version = "1.75"