diff --git a/apps/web/src/components/Sidebar.tsx b/apps/web/src/components/Sidebar.tsx
index 1b43eb4c1..d99d9a96d 100644
--- a/apps/web/src/components/Sidebar.tsx
+++ b/apps/web/src/components/Sidebar.tsx
@@ -1551,7 +1551,9 @@ export default function Sidebar() {
                                               : "text-muted-foreground/40"
                                           }`}
                                         >
-                                          {formatRelativeTime(thread.createdAt)}
+                                          {formatRelativeTime(
+                                            thread.messages.at(-1)?.createdAt ?? thread.createdAt,
+                                          )}
                                         </span>
                                       </div>
                                     </SidebarMenuSubButton>