diff --git a/CHANGELOG.md b/CHANGELOG.md
index e1c3a792b54..78bbce533d3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Release Notes for Craft CMS 5
 
-## Unreleased
+## 5.5.5 - 2024-12-03
 
 - Fixed a bug where asset, category, and entry sources defined by the `EVENT_REGISTER_SOURCES` event didn’t have any custom fields available to them, unless the `EVENT_REGISTER_FIELD_LAYOUTS` event was also used to define the available field layouts for the event-defined source. ([#16256](https://github.com/craftcms/cms/discussions/16256))
 - Fixed a bug where Link fields were getting `string` types in `CustomFieldBehavior` rather than `craft\fields\data\LinkData`.
diff --git a/src/config/app.php b/src/config/app.php
index 86f036d27dc..8fddd252900 100644
--- a/src/config/app.php
+++ b/src/config/app.php
@@ -3,7 +3,7 @@
 return [
     'id' => 'CraftCMS',
     'name' => 'Craft CMS',
-    'version' => '5.5.4',
+    'version' => '5.5.5',
     'schemaVersion' => '5.5.0.0',
     'minVersionRequired' => '4.5.0',
     'basePath' => dirname(__DIR__), // Defines the @app alias