diff --git a/dashboard/15-final/app/dashboard/customers/page.tsx b/dashboard/15-final/app/dashboard/customers/page.tsx
index dcd62af..caf9718 100644
--- a/dashboard/15-final/app/dashboard/customers/page.tsx
+++ b/dashboard/15-final/app/dashboard/customers/page.tsx
@@ -1,5 +1,10 @@
 import { fetchFilteredCustomers } from '@/app/lib/data';
 import CustomersTable from '@/app/ui/customers/table';
+import { Metadata } from 'next';
+
+export const metadata: Metadata = {
+  title: 'Customers',
+};
 
 export default async function Page({
   searchParams,
diff --git a/dashboard/15-final/app/dashboard/invoices/[id]/edit/page.tsx b/dashboard/15-final/app/dashboard/invoices/[id]/edit/page.tsx
index d9a5750..7063f05 100644
--- a/dashboard/15-final/app/dashboard/invoices/[id]/edit/page.tsx
+++ b/dashboard/15-final/app/dashboard/invoices/[id]/edit/page.tsx
@@ -2,6 +2,11 @@ import Form from '@/app/ui/invoices/edit-form';
 import Breadcrumbs from '@/app/ui/invoices/breadcrumbs';
 import { fetchInvoiceById, fetchCustomers } from '@/app/lib/data';
 import { notFound } from 'next/navigation';
+import { Metadata } from 'next';
+
+export const metadata: Metadata = {
+  title: 'Edit Invoice',
+};
 
 export default async function Page({ params }: { params: { id: string } }) {
   const id = params.id;
diff --git a/dashboard/15-final/app/dashboard/invoices/create/page.tsx b/dashboard/15-final/app/dashboard/invoices/create/page.tsx
index 413db57..de8107c 100644
--- a/dashboard/15-final/app/dashboard/invoices/create/page.tsx
+++ b/dashboard/15-final/app/dashboard/invoices/create/page.tsx
@@ -1,6 +1,11 @@
 import { fetchCustomers } from '@/app/lib/data';
 import Form from '@/app/ui/invoices/create-form';
 import Breadcrumbs from '@/app/ui/invoices/breadcrumbs';
+import { Metadata } from 'next';
+
+export const metadata: Metadata = {
+  title: 'Create Invoice',
+};
 
 export default async function Page() {
   const customers = await fetchCustomers();
diff --git a/dashboard/15-final/app/dashboard/invoices/page.tsx b/dashboard/15-final/app/dashboard/invoices/page.tsx
index 1f4dca1..452ece1 100644
--- a/dashboard/15-final/app/dashboard/invoices/page.tsx
+++ b/dashboard/15-final/app/dashboard/invoices/page.tsx
@@ -6,6 +6,11 @@ import { lusitana } from '@/app/ui/fonts';
 import { InvoicesTableSkeleton } from '@/app/ui/dashboard/skeletons';
 import { Suspense } from 'react';
 import { fetchInvoicesPages } from '@/app/lib/data';
+import { Metadata } from 'next';
+
+export const metadata: Metadata = {
+  title: 'Invoices',
+};
 
 export default async function Page({
   searchParams,
diff --git a/dashboard/15-final/app/layout.tsx b/dashboard/15-final/app/layout.tsx
index b56de11..a0884e8 100644
--- a/dashboard/15-final/app/layout.tsx
+++ b/dashboard/15-final/app/layout.tsx
@@ -1,12 +1,14 @@
 import '@/app/ui/global.css';
 import { inter } from '@/app/ui/fonts';
-import type { Metadata } from 'next';
+import { Metadata } from 'next';
 
 export const metadata: Metadata = {
-  title: 'Create Next App',
-  description: 'Generated by create next app',
+  title: {
+    template: '%s | Acme Dashboard',
+    default: 'Acme Dashboard',
+  },
+  description: 'The official Next.js Learn Dashboard built with App Router.',
 };
-
 export default function RootLayout({
   children,
 }: {
diff --git a/dashboard/15-final/app/lib/actions.ts b/dashboard/15-final/app/lib/actions.ts
index 4850ea3..1ffc9a8 100644
--- a/dashboard/15-final/app/lib/actions.ts
+++ b/dashboard/15-final/app/lib/actions.ts
@@ -67,7 +67,7 @@ export async function createInvoice(prevState: State, formData: FormData) {
     };
   }
 
-  // Revalidate cache and redirect user to invoices page
+  // Revalidate the cache for the invoices page and redirect the user.
   revalidatePath('/dashboard/invoices');
   redirect('/dashboard/invoices');
 }
diff --git a/dashboard/15-final/app/lib/data.ts b/dashboard/15-final/app/lib/data.ts
index e0ec01d..63bef45 100644
--- a/dashboard/15-final/app/lib/data.ts
+++ b/dashboard/15-final/app/lib/data.ts
@@ -5,6 +5,7 @@ import {
   InvoiceForm,
   InvoicesTable,
   LatestInvoiceRaw,
+  User,
   Revenue,
 } from './definitions';
 import { formatCurrency } from './utils';
@@ -241,3 +242,13 @@ export async function fetchFilteredCustomers(query: string) {
     throw new Error('Failed to fetch customer table.');
   }
 }
+
+export async function getUser(email: string) {
+  try {
+    const user = await sql`SELECT * from USERS where email=${email}`;
+    return user.rows[0] as User;
+  } catch (error) {
+    console.error('Failed to fetch user:', error);
+    throw new Error('Failed to fetch user.');
+  }
+}
diff --git a/dashboard/15-final/app/opengraph-image.png b/dashboard/15-final/app/opengraph-image.png
index 9d16698..569707e 100644
Binary files a/dashboard/15-final/app/opengraph-image.png and b/dashboard/15-final/app/opengraph-image.png differ
diff --git a/dashboard/15-final/app/ui/login-form.tsx b/dashboard/15-final/app/ui/login-form.tsx
index 08c6b9d..4b07e26 100644
--- a/dashboard/15-final/app/ui/login-form.tsx
+++ b/dashboard/15-final/app/ui/login-form.tsx
@@ -1,13 +1,16 @@
 'use client';
 
-import { signIn } from 'next-auth/react';
-import { useRouter } from 'next/navigation';
-import React, { useState } from 'react';
+import { useState } from 'react';
 import { lusitana } from '@/app/ui/fonts';
-import { AtSymbolIcon, KeyIcon } from '@heroicons/react/24/outline';
+import {
+  AtSymbolIcon,
+  KeyIcon,
+  ArrowRightIcon,
+} from '@heroicons/react/24/outline';
 import { Button } from './button';
-import { ArrowRightIcon } from '@heroicons/react/20/solid';
 import AcmeLogo from './acme-logo';
+import { useRouter } from 'next/navigation';
+import { signIn } from 'next-auth/react';
 
 export default function LoginForm() {
   const [email, setEmail] = useState('');
diff --git a/dashboard/15-final/auth.ts b/dashboard/15-final/auth.ts
index a48dd22..b00a4de 100644
--- a/dashboard/15-final/auth.ts
+++ b/dashboard/15-final/auth.ts
@@ -1,18 +1,7 @@
 import { NextAuthOptions } from 'next-auth';
 import CredentialsProvider from 'next-auth/providers/credentials';
+import { getUser } from '@/app/lib/data';
 import bcrypt from 'bcrypt';
-import { User } from '@/app/lib/definitions';
-import { sql } from '@vercel/postgres';
-
-async function getUser(email: string) {
-  try {
-    const user = await sql`SELECT * from USERS where email=${email}`;
-    return user.rows[0] as User;
-  } catch (error) {
-    console.error('Failed to fetch user:', error);
-    throw new Error('Failed to fetch user.');
-  }
-}
 
 export const authOptions: NextAuthOptions = {
   providers: [
diff --git a/dashboard/15-final/package-lock.json b/dashboard/15-final/package-lock.json
index c6d219c..54c4b94 100644
--- a/dashboard/15-final/package-lock.json
+++ b/dashboard/15-final/package-lock.json
@@ -18,7 +18,7 @@
         "bcrypt": "^5.1.1",
         "clsx": "^2.0.0",
         "next": "^13.5.3",
-        "next-auth": "^4.23.1",
+        "next-auth": "^4.23.2",
         "postcss": "8.4.31",
         "react": "18.2.0",
         "react-dom": "18.2.0",
@@ -48,9 +48,9 @@
       }
     },
     "node_modules/@babel/runtime": {
-      "version": "7.23.1",
-      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.23.1.tgz",
-      "integrity": "sha512-hC2v6p8ZSI/W0HUzh3V8C5g+NwSKzKPtJwSpTjwl0o297GP9+ZLQSkdvHz46CM3LqyoXxq+5G9komY+eSqSO0g==",
+      "version": "7.23.2",
+      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.23.2.tgz",
+      "integrity": "sha512-mM8eg4yl5D6i3lu2QKPuPH4FArvJ8KhTofbE7jwMUv9KX5mBvwPAqnV3MlyBNqdp9RyRKP6Yck8TrfYrPvX3bg==",
       "dependencies": {
         "regenerator-runtime": "^0.14.0"
       },
@@ -1073,9 +1073,9 @@
       }
     },
     "node_modules/jose": {
-      "version": "4.14.6",
-      "resolved": "https://registry.npmjs.org/jose/-/jose-4.14.6.tgz",
-      "integrity": "sha512-EqJPEUlZD0/CSUMubKtMaYUOtWe91tZXTWMJZoKSbLk+KtdhNdcvppH8lA9XwVu2V4Ailvsj0GBZJ2ZwDjfesQ==",
+      "version": "4.15.3",
+      "resolved": "https://registry.npmjs.org/jose/-/jose-4.15.3.tgz",
+      "integrity": "sha512-RZJdL9Qjd1sqNdyiVteRGV/bnWtik/+PJh1JP4kT6+x1QQMn+7ryueRys5BEueuayvSVY8CWGCisCDazeRLTuw==",
       "funding": {
         "url": "https://github.com/sponsors/panva"
       }
@@ -1302,9 +1302,9 @@
       }
     },
     "node_modules/next-auth": {
-      "version": "4.23.1",
-      "resolved": "https://registry.npmjs.org/next-auth/-/next-auth-4.23.1.tgz",
-      "integrity": "sha512-mL083z8KgRtlrIV6CDca2H1kduWJuK/3pTS0Fe2og15KOm4v2kkLGdSDfc2g+019aEBrJUT0pPW2Xx42ImN1WA==",
+      "version": "4.23.2",
+      "resolved": "https://registry.npmjs.org/next-auth/-/next-auth-4.23.2.tgz",
+      "integrity": "sha512-VRmInu0r/yZNFQheDFeOKtiugu3bt90Po3owAQDnFQ3YLQFmUKgFjcE2+3L0ny5jsJpBXaKbm7j7W2QTc6Ye2A==",
       "dependencies": {
         "@babel/runtime": "^7.20.13",
         "@panva/hkdf": "^1.0.2",
@@ -1477,11 +1477,11 @@
       }
     },
     "node_modules/openid-client": {
-      "version": "5.5.0",
-      "resolved": "https://registry.npmjs.org/openid-client/-/openid-client-5.5.0.tgz",
-      "integrity": "sha512-Y7Xl8BgsrkzWLHkVDYuroM67hi96xITyEDSkmWaGUiNX6CkcXC3XyQGdv5aWZ6dukVKBFVQCADi9gCavOmU14w==",
+      "version": "5.6.1",
+      "resolved": "https://registry.npmjs.org/openid-client/-/openid-client-5.6.1.tgz",
+      "integrity": "sha512-PtrWsY+dXg6y8mtMPyL/namZSYVz8pjXz3yJiBNZsEdCnu9miHLB4ELVC85WvneMKo2Rg62Ay7NkuCpM0bgiLQ==",
       "dependencies": {
-        "jose": "^4.14.4",
+        "jose": "^4.15.1",
         "lru-cache": "^6.0.0",
         "object-hash": "^2.2.0",
         "oidc-token-hash": "^5.0.3"
@@ -1731,9 +1731,9 @@
       }
     },
     "node_modules/preact": {
-      "version": "10.18.0",
-      "resolved": "https://registry.npmjs.org/preact/-/preact-10.18.0.tgz",
-      "integrity": "sha512-O4dGFmErPd3RNVDvXmCbOW6hetnve6vYtjx5qf51mCUmBS96s66MrNQkEII5UThDGoNF7953ptA+aNupiDxVeg==",
+      "version": "10.18.1",
+      "resolved": "https://registry.npmjs.org/preact/-/preact-10.18.1.tgz",
+      "integrity": "sha512-mKUD7RRkQQM6s7Rkmi7IFkoEHjuFqRQUaXamO61E6Nn7vqF/bo7EZCmSyrUnp2UWHw0O7XjZ2eeXis+m7tf4lg==",
       "funding": {
         "type": "opencollective",
         "url": "https://opencollective.com/preact"
diff --git a/dashboard/15-final/package.json b/dashboard/15-final/package.json
index ebb2c58..750c661 100644
--- a/dashboard/15-final/package.json
+++ b/dashboard/15-final/package.json
@@ -20,7 +20,7 @@
     "bcrypt": "^5.1.1",
     "clsx": "^2.0.0",
     "next": "^13.5.3",
-    "next-auth": "^4.23.1",
+    "next-auth": "^4.23.2",
     "postcss": "8.4.31",
     "react": "18.2.0",
     "react-dom": "18.2.0",