diff --git a/CHANGELOG.md b/CHANGELOG.md
index a8f25768..ebe4d9e3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -41,6 +41,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 - Install API endpoint: extract ZIP to temp directory before passing to Joomla Installer (was passing ZIP path directly)
 - Clean up extracted temp directory on success or failure
+- Update site disabled by Joomla when protected=1 — ensureProtectedFlag() now re-enables it
 
 ### Changed
 - CI: auto-release uses stream tag `stable` instead of version tag `vXX`
diff --git a/src/packages/plg_system_mokowaas/Extension/MokoWaaS.php b/src/packages/plg_system_mokowaas/Extension/MokoWaaS.php
index 698bb8b0..eb5f2c3b 100644
--- a/src/packages/plg_system_mokowaas/Extension/MokoWaaS.php
+++ b/src/packages/plg_system_mokowaas/Extension/MokoWaaS.php
@@ -1067,6 +1067,8 @@ class MokoWaaS extends CMSPlugin
 		try
 		{
 			$db = Factory::getDbo();
+
+			// Set protected=1, locked=0 on MokoWaaS extensions
 			$query = $db->getQuery(true)
 				->update($db->quoteName('#__extensions'))
 				->set($db->quoteName('protected') . ' = 1')
@@ -1076,6 +1078,18 @@ class MokoWaaS extends CMSPlugin
 				->where($db->quoteName('protected') . ' = 0');
 			$db->setQuery($query);
 			$db->execute();
+
+			// Ensure update site stays enabled (protected extensions get their update site disabled by Joomla)
+			$query = $db->getQuery(true)
+				->update($db->quoteName('#__update_sites') . ' AS us')
+				->join('INNER', $db->quoteName('#__update_sites_extensions') . ' AS use2 ON us.update_site_id = use2.update_site_id')
+				->join('INNER', $db->quoteName('#__extensions') . ' AS e ON use2.extension_id = e.extension_id')
+				->set('us.enabled = 1')
+				->where('us.enabled = 0')
+				->where('(' . $db->quoteName('e.element') . ' = ' . $db->quote('mokowaas')
+					. ' OR ' . $db->quoteName('e.element') . ' = ' . $db->quote('pkg_mokowaas') . ')');
+			$db->setQuery($query);
+			$db->execute();
 		}
 		catch (\Throwable $e)
 		{