diff --git a/backend/src/app/sitemap-index.xml/route.ts b/backend/src/app/sitemap-index.xml/route.ts
index 7d6c719..711c88f 100644
--- a/backend/src/app/sitemap-index.xml/route.ts
+++ b/backend/src/app/sitemap-index.xml/route.ts
@@ -2,8 +2,10 @@ import { prisma } from "@/lib/prisma";
 import { CHUNK_SIZE } from "../sitemap";
 import { NextResponse } from "next/server";
 
+export const revalidate = 43200; // update every 12 hours
+
 export async function GET() {
-	const baseUrl = process.env.NEXT_PUBLIC_FRONTEND_URL!;
+	const apiUrl = process.env.NEXT_PUBLIC_BASE_URL!;
 
 	const total = await prisma.mii.count({
 		where: { in_queue: false, quarantined: false },
@@ -11,7 +13,7 @@ export async function GET() {
 	const miiChunks = Math.ceil(total / CHUNK_SIZE);
 	const totalSitemaps = miiChunks + 1; // +1 for the static-routes sitemap
 
-	const sitemapEntries = Array.from({ length: totalSitemaps }, (_, i) => `<sitemap><loc>${baseUrl}/sitemap/${i}.xml</loc></sitemap>`).join("");
+	const sitemapEntries = Array.from({ length: totalSitemaps }, (_, i) => `<sitemap><loc>${apiUrl}/sitemap/${i}.xml</loc></sitemap>`).join("");
 
 	const xml = `<?xml version="1.0" encoding="UTF-8"?>
 <sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
diff --git a/backend/src/app/sitemap.ts b/backend/src/app/sitemap.ts
index 1fab28f..0cd6b8b 100644
--- a/backend/src/app/sitemap.ts
+++ b/backend/src/app/sitemap.ts
@@ -1,5 +1,4 @@
 import { prisma } from "@/lib/prisma";
-import { Prisma } from "@prisma/client";
 import type { MetadataRoute } from "next";
 
 type SitemapRoute = MetadataRoute.Sitemap[0];