diff --git a/frontend/src/App.vue b/frontend/src/App.vue
index a03651e..8404b9e 100644
--- a/frontend/src/App.vue
+++ b/frontend/src/App.vue
@@ -9,7 +9,9 @@
       </div>
     </nav>
     <main class="main">
-      <router-view />
+      <!-- :key forces each view to re-evaluate i18n.t() when the locale changes,
+           so switching language updates the whole page reliably. -->
+      <router-view :key="i18n.locale" />
     </main>
   </div>
 </template>