diff --git a/lib/private/App/AppStore/Fetcher/AppFetcher.php b/lib/private/App/AppStore/Fetcher/AppFetcher.php
index 63121c079b..a8fd934934 100644
--- a/lib/private/App/AppStore/Fetcher/AppFetcher.php
+++ b/lib/private/App/AppStore/Fetcher/AppFetcher.php
@@ -133,9 +133,11 @@ class AppFetcher extends Fetcher {
 
 	/**
 	 * @param string $version
+	 * @param string $filename
 	 */
-	public function setVersion($version) {
+	public function setVersion(string $version, string $fileName = 'apps.json') {
 		parent::setVersion($version);
+		$this->fileName = $fileName;
 		$this->setEndpoint();
 	}
 }
diff --git a/lib/private/App/AppStore/Fetcher/Fetcher.php b/lib/private/App/AppStore/Fetcher/Fetcher.php
index 4dbc360c0c..172584c522 100644
--- a/lib/private/App/AppStore/Fetcher/Fetcher.php
+++ b/lib/private/App/AppStore/Fetcher/Fetcher.php
@@ -194,7 +194,7 @@ abstract class Fetcher {
 	 * Set the current Nextcloud version
 	 * @param string $version
 	 */
-	public function setVersion($version) {
+	public function setVersion(string $version) {
 		$this->version = $version;
 	}
 }