How can I re-build my Django Framework Sitemap?

I did my Django Sitemap, and it works in its sitemap.xml file, but I made some changes by adding more URLs to the map, even if I migrate them, my sitemap does not update. I've tried to create another branch and recreate everything, I've tried refresh_sitemap but it is not accepted. I really do not know how to rebuild it and I tried many things.

from django.contrib.sitemaps import Sitemap
from django.shortcuts import reverse
from pyupio.packages.models import Package
from pyupio.vulns.models import Vuln

class PackagesSitemap(Sitemap):

    changefreq = "weekly"
    priority = 0.7

    def items(self):
        return Package.objects.all()

class StaticViewSitemap(Sitemap):

    changefreq = "weekly"
    priority = 1

    def items(self):
        return ['home','pricing']

    def location(self, item):
        return reverse(item)

In this case, I added the pricing, but it does not appear in my generated sitemap.

<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml">
<url>
<loc>http://pyupio.io/</loc>
<changefreq>weekly</changefreq>
<priority>1</priority>
</url>
<url>
</urlset>
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