diff --git a/boot.php b/boot.php
index 0fdc2f8..a5849f8 100644
--- a/boot.php
+++ b/boot.php
@@ -11,6 +11,7 @@
 use rex_extension;
 use rex_extension_point;
 use rex_plugin;
+use rex_api_function;
 use rex_url;
 use rex_yform_manager_dataset;
 use rex_yform_manager_table;
@@ -49,6 +50,8 @@
     });
 }
 
+rex_api_function::register('neues_rss', neues_rss_api::class);
+
 if (rex_plugin::get('yform', 'rest')->isAvailable() && !rex::isSafeMode()) {
     /* YForm Rest API */
     $rex_neues_entry_route = new rex_yform_rest_route(
diff --git a/lib/rex_api_neues_rss.php b/lib/neues_rss_api.php
similarity index 89%
rename from lib/rex_api_neues_rss.php
rename to lib/neues_rss_api.php
index d486a12..1820f4d 100644
--- a/lib/rex_api_neues_rss.php
+++ b/lib/neues_rss_api.php
@@ -1,19 +1,18 @@
 <?php
 
-namespace FriendsOfRedaxo\neues;
+namespace FriendsOfRedaxo\Neues;
 
 use rex;
-use rex_api_function;
 use rex_clang;
+use rex_escape;
 use rex_path;
+use rex_request;
 use rex_response;
 use rex_string;
 use rex_yform_manager_collection;
 use SimpleXMLElement;
 
-/* Achtung, evtl. Namespace entfernen weil anhand Klassennamen gesucht wird */
-
-class rex_api_neues_rss extends rex_api_function
+class neues_rss_api
 {
     protected $published = true;  // Erlaubt den Aufruf aus dem Frontend
 
@@ -51,7 +50,7 @@ public static function joinUrls($url1, $url2)
         return rtrim($url1, '/') . '/' . ltrim($url2, '/');
     }
 
-    public static function createRssFeed(rex_yform_manager_collection $collection, $domain, $lang, $description, $filename = 'rss.neues.xml')
+    public static function createRssFeed(\rex_yform_manager_collection $collection, $domain, $lang, $description, $filename = 'rss.neues.xml')
     {
         $xml = new SimpleXMLElement('<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom"></rss>');
 
diff --git a/package.yml b/package.yml
index 4707901..c69c431 100644
--- a/package.yml
+++ b/package.yml
@@ -6,8 +6,11 @@ load: late
 
 requires:
     php:
-        version: '>8.1,<9'
-    redaxo: ^5.15
+
+        version: '>7.3,<9'
+    redaxo: ^5.17
+
+
     packages:
         yform: '^4'
         yform_field: '^2.3.0'