diff --git a/CHANGELOG.md b/CHANGELOG.md
index aa3e7b8..a2d96dc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,7 @@ The first name in a bullet point below is the Python class name while the second
 Elements marked as `collectable` means that they can be added directly to a package.
 Non-collectable elements are various sub-elements to collectable elements.
 
-## Unreleased
+## [v0.5.3] - 2024-03-29
 
 ### Added
 
diff --git a/pyproject.toml b/pyproject.toml
index 28ae0b2..7fc63a1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "autosar"
-version = "0.5.3a1"
+version = "0.5.3"
 description = "A set of Python modules for working with AUTOSAR XML files"
 readme = "README.md"
 requires-python = ">=3.10"