diff --git a/administrator/components/com_patchtester/PatchTester/Controller/AbstractController.php b/administrator/components/com_patchtester/PatchTester/Controller/AbstractController.php
index 081a105..c8bff28 100644
--- a/administrator/components/com_patchtester/PatchTester/Controller/AbstractController.php
+++ b/administrator/components/com_patchtester/PatchTester/Controller/AbstractController.php
@@ -8,6 +8,7 @@
 
 namespace PatchTester\Controller;
 
+use Joomla\Application\AbstractApplication;
 use Joomla\Registry\Registry;
 
 /**
@@ -38,12 +39,12 @@ abstract class AbstractController extends \JControllerBase
 	/**
 	 * Instantiate the controller
 	 *
-	 * @param   \JInput            $input  The input object.
-	 * @param   \JApplicationBase  $app    The application object.
+	 * @param   \JInput              $input  The input object.
+	 * @param   AbstractApplication  $app    The application object.
 	 *
 	 * @since   2.0
 	 */
-	public function __construct(\JInput $input = null, \JApplicationBase $app = null)
+	public function __construct(\JInput $input = null, AbstractApplication $app = null)
 	{
 		parent::__construct($input, $app);
 
diff --git a/administrator/components/com_patchtester/script.php b/administrator/components/com_patchtester/script.php
index 45448c6..e23a5bb 100644
--- a/administrator/components/com_patchtester/script.php
+++ b/administrator/components/com_patchtester/script.php
@@ -28,7 +28,7 @@ class Com_PatchtesterInstallerScript extends JInstallerScript
 	 */
 	public function __construct()
 	{
-		$this->minimumJoomla = '3.6';
+		$this->minimumJoomla = '3.7';
 		$this->minimumPhp    = JOOMLA_MINIMUM_PHP;
 
 		$this->deleteFolders = array(