diff --git a/.development/mu-plugin.php b/.development/mu-plugin.php
new file mode 100644
index 0000000..c373075
--- /dev/null
+++ b/.development/mu-plugin.php
@@ -0,0 +1,27 @@
+<?php
+
+/*
+ * Plugin Name: Gutenberg Versions Manager Mu Plugin
+ * Description: A Mu Plugin to test the functionality of the Gutenberg Versions Manager.
+ * Author: Inpsyde
+ * Version: 1.0.0.0
+ */
+
+declare(strict_types=1);
+
+namespace Inpsyde\GutenbergVersionManager;
+
+$autoloader = WP_CONTENT_DIR . '/mu-plugins/gutenberg-versions-manager/vendor/autoload.php';
+
+if (\file_exists($autoloader)) {
+    require_once $autoloader;
+}
+if (!\class_exists('Inpsyde\\App\\App')) {
+    return;
+}
+
+$app = \Inpsyde\App\App::new()->addPackage(
+    \Inpsyde\GutenbergVersionManager\Package::new()
+);
+
+\add_action('muplugins_loaded', static fn () => $app->boot());
diff --git a/.development/themes/test-theme/config/gutenberg.php b/.development/themes/test-theme/config/gutenberg.php
new file mode 100644
index 0000000..14e4633
--- /dev/null
+++ b/.development/themes/test-theme/config/gutenberg.php
@@ -0,0 +1,9 @@
+<?php
+
+declare(strict_types=1);
+
+return [
+    'versions' => [
+        '16.8.0',
+    ],
+];
diff --git a/.development/themes/test-theme/functions.php b/.development/themes/test-theme/functions.php
new file mode 100644
index 0000000..174d7fd
--- /dev/null
+++ b/.development/themes/test-theme/functions.php
@@ -0,0 +1,3 @@
+<?php
+
+declare(strict_types=1);
diff --git a/.development/themes/test-theme/style.css b/.development/themes/test-theme/style.css
new file mode 100644
index 0000000..e56be76
--- /dev/null
+++ b/.development/themes/test-theme/style.css
@@ -0,0 +1,4 @@
+/*
+ * Theme Name: Gutenberg Versions Manager
+ * Theme Version: 1.0.0.0
+ */
diff --git a/.development/themes/test-theme/templates/index.html b/.development/themes/test-theme/templates/index.html
new file mode 100644
index 0000000..e69de29
diff --git a/.gitignore b/.gitignore
index bb572e4..146625c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,7 +2,6 @@
 /node_modules/
 /.psalm
 /.idea
-/.development
 
 /auth.json
 /.phpunit.result.cache