diff --git a/appinfo/info.xml b/appinfo/info.xml
index 3be8542..51cc168 100644
--- a/appinfo/info.xml
+++ b/appinfo/info.xml
@@ -11,7 +11,7 @@
     <description><![CDATA[Push update support for desktop app.
 
 Once the app is installed, the push binary needs to be setup. You can either use the setup wizard with `occ notify_push:setup` or see the [README](http://github.com/nextcloud/notify_push) for detailed setup instructions]]></description>
-    <version>1.2.2</version>
+    <version>1.3.0</version>
     <licence>agpl</licence>
     <author>Robin Appelman</author>
     <namespace>NotifyPush</namespace>
@@ -27,7 +27,7 @@ Once the app is installed, the push binary needs to be setup. You can either use
     <bugs>https://github.com/nextcloud/notify_push/issues</bugs>
 
     <dependencies>
-        <nextcloud min-version="27" max-version="32"/>
+        <nextcloud min-version="29" max-version="33"/>
     </dependencies>
 
     <repair-steps>
diff --git a/lib/Controller/TestController.php b/lib/Controller/TestController.php
index 0c09748..4bc12b1 100644
--- a/lib/Controller/TestController.php
+++ b/lib/Controller/TestController.php
@@ -16,27 +16,16 @@
 use OCP\AppFramework\Http\DataDisplayResponse;
 use OCP\AppFramework\Http\DataResponse;
 use OCP\IAppConfig;
-use OCP\IConfig;
 use OCP\IRequest;
 
 class TestController extends Controller {
-	private $config;
-	private $appConfig;
-	private $queue;
-	private $appManager;
-
 	public function __construct(
 		IRequest $request,
-		IConfig $config,
-		IAppConfig $appConfig,
-		IQueue $queue,
-		IAppManager $appManager,
+		private IAppConfig $appConfig,
+		private IQueue $queue,
+		private IAppManager $appManager,
 	) {
 		parent::__construct('notify_push', $request);
-		$this->config = $config;
-		$this->appConfig = $appConfig;
-		$this->queue = $queue;
-		$this->appManager = $appManager;
 	}
 
 	/**
@@ -47,12 +36,8 @@ public function __construct(
 	public function cookie(): DataResponse {
 		// starting with 32, the app config does some internal caching
 		// that interferes with the quick set+get from this test.
-		// unfortunately the api to clear the cache is 29+ only, and we still support 27
-		if (method_exists($this->appConfig, 'clearCache')) {
-			/** @psalm-suppress UndefinedInterfaceMethod */
-			$this->appConfig->clearCache();
-		}
-		return new DataResponse((int)$this->config->getAppValue('notify_push', 'cookie', '0'));
+		$this->appConfig->clearCache();
+		return new DataResponse($this->appConfig->getValueInt('notify_push', 'cookie'));
 	}
 
 	/**
diff --git a/lib/SelfTest.php b/lib/SelfTest.php
index e0f8e43..f6a27f2 100644
--- a/lib/SelfTest.php
+++ b/lib/SelfTest.php
@@ -13,6 +13,7 @@
 use OCA\NotifyPush\Queue\RedisQueue;
 use OCP\App\IAppManager;
 use OCP\Http\Client\IClientService;
+use OCP\IAppConfig;
 use OCP\IConfig;
 use OCP\IDBConnection;
 use Symfony\Component\Console\Output\OutputInterface;
@@ -28,6 +29,7 @@ class SelfTest {
 	public function __construct(
 		IClientService $clientService,
 		private IConfig $config,
+		private IAppConfig $appConfig,
 		private IQueue $queue,
 		private IDBConnection $connection,
 		private IAppManager $appManager,
@@ -55,7 +57,7 @@ public function test(string $server, OutputInterface $output, bool $ignoreProxyE
 		}
 
 		$this->queue->push('notify_test_cookie', $this->cookie);
-		$this->config->setAppValue('notify_push', 'cookie', (string)$this->cookie);
+		$this->appConfig->setValueInt('notify_push', 'cookie', $this->cookie);
 
 		try {
 			$retrievedCookie = (int)$this->client->get($server . '/test/cookie', ['nextcloud' => ['allow_local_address' => true], 'verify' => false])->getBody();