diff --git a/CHANGELOG.md b/CHANGELOG.md
index dc6177b..3de1d69 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,7 +8,7 @@ and this project tries to adhere to [Semantic Versioning](https://semver.org/spe
 Historic and pre-release versions aren't necessarily included.
 
 
-## UNRELEASED - TBC
+## [0.12.0] - 2024-10-11
 
 ### Added
 
@@ -181,6 +181,7 @@ Historic and pre-release versions aren't necessarily included.
 - Update dev/test dependencies: ruff
 
 
+[0.12.0]: https://github.com/elliot-100/Spond-classes/compare/v0.11.2...v0.12.0
 [0.11.2]: https://github.com/elliot-100/Spond-classes/compare/v0.11.1...v0.11.2
 [0.11.1]: https://github.com/elliot-100/Spond-classes/compare/v0.11.0...v0.11.1
 [0.11.0]: https://github.com/elliot-100/Spond-classes/compare/v0.10.1...v0.11.0
diff --git a/pyproject.toml b/pyproject.toml
index 575bdf7..09fa018 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "spond-classes"
-version = "0.11.2"
+version = "0.12.0"
 description = "Experimental Python class abstraction layer for `spond` package."
 authors = ["elliot-100 <3186037+elliot-100@users.noreply.github.com>"]
 readme = "README.md"