diff --git a/ui/src/views/version/swRegistration.ts b/ui/src/views/version/swRegistration.ts
index 00a6c16..6513792 100644
--- a/ui/src/views/version/swRegistration.ts
+++ b/ui/src/views/version/swRegistration.ts
@@ -73,15 +73,16 @@ export const registerServiceWorker = () => {
   // skipWaiting: true (workbox config) → controllerchange → autoUpdate reload.
   if ('serviceWorker' in navigator) {
     navigator.serviceWorker.ready.then((registration) => {
+      // ready'den önce updatefound zaten tetiklendiyse (race condition)
+      if (registration.installing && navigator.serviceWorker.controller) {
+        showUpdateOverlay()
+      }
+
       registration.addEventListener('updatefound', () => {
-        const newWorker = registration.installing
-        if (!newWorker) return
-        newWorker.addEventListener('statechange', () => {
-          // Yeni SW kuruldu, aktivasyon aşamasına geçiyor
-          if (newWorker.state === 'installed' && navigator.serviceWorker.controller) {
-            showUpdateOverlay()
-          }
-        })
+        // Güncelleme başlar başlamaz overlay'i göster
+        if (navigator.serviceWorker.controller) {
+          showUpdateOverlay()
+        }
       })
     })
   }