Hi Everyone,
I've deployed my Blog with vercel and everything seems to run pretty smoothly. The only thing I've problem with is the dynamic sitemap. My file is located in app/sitemap.js. and this is my code.

import { getPosts } from "@/config/contentful/client"

export default async function sitemap() {
  const posts = (await getPosts()).items;
  const postsEntries = posts.map(post => (
    {
      url: `${process.env.NEXT_PUBLIC_SITE_URL}/posts/${post.fields.postSlug}`,
      lastModified: new Date(post.sys.updatedAt)
    }
  ))
  return [
    {
      url: `${process.env.NEXT_PUBLIC_SITE_URL}`,
      changeFrequency: 'yearly',
    },
    {
      url:`${process.env.NEXT_PUBLIC_SITE_URL}/blog`,
      changeFrequency: 'monthly',
    },
    {
      url: `${process.env.NEXT_PUBLIC_SITE_URL}/about`,
      changeFrequency: 'yearly',
    },
    ...postsEntries
  ]
}

At the moment if I don't push to production the entire app the sitemap doesn't get updated and so misses the entire purpose of the function to generate a new sitemap dynamically on every request. Did anyone face the same problem? How did you fix it? Thanks for help me in advance 😉