diff --git a/src/stores/user.js b/src/stores/user.js
index 8b43db6..6e9491f 100644
--- a/src/stores/user.js
+++ b/src/stores/user.js
@@ -41,9 +41,13 @@ export const useUserStore = defineStore("user", () => {
   }
 
   function readAllNotifications(notificationId) {
-    user.value.notifications.forEach((notification) => {
-      notification.isRead = true;
-    });
+    projects.value = projects.value.map((project) => ({
+      ...project,
+      notifications: project.notifications.map((notification) => ({
+        ...notification,
+        readby: [...new Set([...notification.readby, user.value.uuid])],
+      })),
+    }));
   }
 
   function canEditComment(comment) {