diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9eda6d02d8..aef0f09f85 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+## [3.9.12] - 2024-01-30
+
 ### Fixed
 
 - Support `sqlalchemy >= 2.0.0` ([#1908](https://github.com/moj-analytical-services/splink/pull/1908))
@@ -72,7 +74,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Corrected path for Spark `.jar` file containing UDFs to work correctly for Spark < 3.0 ([#1622](https://github.com/moj-analytical-services/splink/pull/1622))
 - Spark UDF `damerau_levensthein` is now only registered for Spark >= 3.0, as it is not compatible with earlier versions ([#1622](https://github.com/moj-analytical-services/splink/pull/1622))
 
-[unreleased]: https://github.com/moj-analytical-services/splink/compare/3.9.11...HEAD
+[unreleased]: https://github.com/moj-analytical-services/splink/compare/3.9.12...HEAD
+[3.9.12]: https://github.com/moj-analytical-services/splink/compare/3.9.11...3.9.12
 [3.9.11]: https://github.com/moj-analytical-services/splink/compare/3.9.10...3.9.11
 [3.9.10]: https://github.com/moj-analytical-services/splink/compare/v3.9.9...3.9.10
 [3.9.9]: https://github.com/moj-analytical-services/splink/compare/v3.9.8...3.9.9
diff --git a/pyproject.toml b/pyproject.toml
index 7a57905d57..ff7075bf1a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "splink"
-version = "3.9.11"
+version = "3.9.12"
 description = "Fast probabilistic data linkage at scale"
 authors = ["Robin Linacre <robinlinacre@hotmail.com>", "Sam Lindsay", "Theodore Manassis", "Tom Hepworth", "Andy Bond", "Ross Kennedy"]
 license = "MIT"
diff --git a/splink/__init__.py b/splink/__init__.py
index 041b4750be..e44c4cca5e 100644
--- a/splink/__init__.py
+++ b/splink/__init__.py
@@ -1 +1 @@
-__version__ = "3.9.11"
+__version__ = "3.9.12"