diff --git a/CHANGELOG.md b/CHANGELOG.md
index b80fc472cbb..c35d3bc5b12 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Release Notes for Craft CMS 5
 
-## Unreleased
+## 5.5.6 - 2024-12-10
 
 - Fixed a bug where some blank user group and entry type values weren’t getting omitted from project config data. ([#16272](https://github.com/craftcms/cms/pull/16272), [#16273](https://github.com/craftcms/cms/pull/16273))
 - Fixed a bug where pressing <kbd>Return</kbd> when a color text input within an editable table was focused was submitting the form rather than moving focus to the next row.
diff --git a/src/config/app.php b/src/config/app.php
index 8fddd252900..7c7fe0d5109 100644
--- a/src/config/app.php
+++ b/src/config/app.php
@@ -3,7 +3,7 @@
 return [
     'id' => 'CraftCMS',
     'name' => 'Craft CMS',
-    'version' => '5.5.5',
+    'version' => '5.5.6',
     'schemaVersion' => '5.5.0.0',
     'minVersionRequired' => '4.5.0',
     'basePath' => dirname(__DIR__), // Defines the @app alias