diff --git a/CHANGELOG.md b/CHANGELOG.md
index 966c41cb756..a69915132a0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Release Notes for Craft CMS 5
 
-## Unreleased
+## 5.1.8 - 2024-06-03
 
 - Added `craft\helpers\Gql::isIntrospectionQuery()`.
 - `craft\helpers\Html::id()` now allows IDs to begin with numbers. ([#15066](https://github.com/craftcms/cms/issues/15066))
diff --git a/src/config/app.php b/src/config/app.php
index 888948e4ca0..bb6f779b848 100644
--- a/src/config/app.php
+++ b/src/config/app.php
@@ -3,7 +3,7 @@
 return [
     'id' => 'CraftCMS',
     'name' => 'Craft CMS',
-    'version' => '5.1.7',
+    'version' => '5.1.8',
     'schemaVersion' => '5.0.0.20',
     'minVersionRequired' => '4.4.0',
     'basePath' => dirname(__DIR__), // Defines the @app alias