diff --git a/src/Controllers/ManifestController.php b/src/Controllers/ManifestController.php
index fd35167..271c688 100644
--- a/src/Controllers/ManifestController.php
+++ b/src/Controllers/ManifestController.php
@@ -53,7 +53,7 @@ class ManifestController extends Controller
             'theme_color' => $cfg->get('background'),
             'orientation' => 'portrait-primary',
             'serviceworker' => [
-                'src' => 'sw.js',
+                'src' => 'sw.js?v='.ServiceWorkerController::Version(),
                 'scope' => '/',
                 'use_cache' => true,
             ],
@@ -101,7 +101,7 @@ class ManifestController extends Controller
                     'type' => 'image/png',
                 ],
                 [
-                    'src' => self::join_links($icons_path, 'android-chrome-384x384.png'),
+                    'src' => self::join_links($icons_path, 'android-chrome-512x512.png'),
                     'sizes' => '512x512',
                     'type' => 'image/png',
                 ],
diff --git a/src/Controllers/ServiceWorkerController.php b/src/Controllers/ServiceWorkerController.php
index 51f0283..9602912 100644
--- a/src/Controllers/ServiceWorkerController.php
+++ b/src/Controllers/ServiceWorkerController.php
@@ -78,8 +78,8 @@ class ServiceWorkerController extends Controller {
         return $this->config()->get('debug_mode');
     }
 
-    public function Version() {
-        return $this->config()->get('version').filemtime(self::getScriptPath());
+    public static function Version() {
+        return self::config()->get('version').filemtime(self::getScriptPath());
     }
 
     /**