diff --git a/CHANGELOG.md b/CHANGELOG.md
index df7c27f7b7c..276c21fbb8b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Release Notes for Craft CMS 5
 
-## Unreleased
+## 5.5.3 - 2024-11-22
 
 - Element indexes now sort by ID by default, for sources that don’t define a default sort option.
 - Fixed a bug where element indexes were sorting by the first sortable attribute alphabetically by default, rather than the first sortable attribute defined by the element type.
diff --git a/src/config/app.php b/src/config/app.php
index ab08e01d68c..719bdfd90ff 100644
--- a/src/config/app.php
+++ b/src/config/app.php
@@ -3,7 +3,7 @@
 return [
     'id' => 'CraftCMS',
     'name' => 'Craft CMS',
-    'version' => '5.5.2',
+    'version' => '5.5.3',
     'schemaVersion' => '5.5.0.0',
     'minVersionRequired' => '4.5.0',
     'basePath' => dirname(__DIR__), // Defines the @app alias