diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9ac423f..ea16682 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,11 +1,15 @@
 # Changelog
 
-## [Unreleased](https://github.com/seapagan/simple-toml-settings/tree/HEAD)
+## [0.4.0](https://github.com/seapagan/simple-toml-settings/releases/tag/0.4.0) (2024-02-14)
 
 **Enhancements**
 
 - Raise schema error if the file schema does not match the required schema ([#111](https://github.com/seapagan/simple-toml-settings/pull/111)) by [seapagan](https://github.com/seapagan)
 
+**Documentation**
+
+- Add a SECURITY file ([#120](https://github.com/seapagan/simple-toml-settings/pull/120)) by [seapagan](https://github.com/seapagan)
+
 **Dependency Updates**
 
 - Bump mypy from 1.7.1 to 1.8.0 ([#119](https://github.com/seapagan/simple-toml-settings/pull/119)) by [dependabot[bot]](https://github.com/apps/dependabot)
@@ -20,7 +24,7 @@
 - Bump cryptography from 41.0.6 to 42.0.0 ([#107](https://github.com/seapagan/simple-toml-settings/pull/107)) by [dependabot[bot]](https://github.com/apps/dependabot)
 - *and 33 more dependency updates*
 
-[`Full Changelog`](https://github.com/seapagan/simple-toml-settings/compare/0.3.2...HEAD) | [`Diff`](https://github.com/seapagan/simple-toml-settings/compare/0.3.2...HEAD.diff) | [`Patch`](https://github.com/seapagan/simple-toml-settings/compare/0.3.2...HEAD.patch)
+[`Full Changelog`](https://github.com/seapagan/simple-toml-settings/compare/0.3.2...0.4.0) | [`Diff`](https://github.com/seapagan/simple-toml-settings/compare/0.3.2...0.4.0.diff) | [`Patch`](https://github.com/seapagan/simple-toml-settings/compare/0.3.2...0.4.0.patch)
 
 ## [0.3.2](https://github.com/seapagan/simple-toml-settings/releases/tag/0.3.2) (2023-11-02)
 
diff --git a/pyproject.toml b/pyproject.toml
index 4a3df58..65f3212 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "simple-toml-settings"
-version = "0.3.2"
+version = "0.4.0"
 description = "A Python library to save your settings in a TOML file."
 authors = ["Grant Ramsay <seapagan@gmail.com>"]
 readme = "README.md"