diff --git a/app/sitemap.ts b/app/sitemap.ts
index 150cd172e..e332244c9 100644
--- a/app/sitemap.ts
+++ b/app/sitemap.ts
@@ -2,38 +2,38 @@ import { MetadataRoute } from 'next';
 import posts from '@/app/blog/data/posts.json'; // Example JSON data file with dynamic routes
 
 export default function sitemap(): MetadataRoute.Sitemap {
-  const staticRoutes = [
+  const staticRoutes: MetadataRoute.Sitemap = [
     {
       url: 'https://neerajrekwar.github.io',
       lastModified: new Date(),
-      changeFrequency: 'monthly',
+      changeFrequency: 'yearly', // Typed correctly
       priority: 1,
     },
     {
       url: 'https://neerajrekwar.github.io/about',
       lastModified: new Date(),
-      changeFrequency: 'monthly',
+      changeFrequency: 'monthly', // Typed correctly
       priority: 0.8,
     },
     {
       url: 'https://neerajrekwar.github.io/blog',
       lastModified: new Date(),
-      changeFrequency: 'weekly',
+      changeFrequency: 'weekly', // Typed correctly
       priority: 0.5,
     },
     {
       url: 'https://neerajrekwar.github.io/contact',
       lastModified: new Date(),
-      changeFrequency: 'weekly',
+      changeFrequency: 'weekly', // Typed correctly
       priority: 0.5,
     },
   ];
 
   // Generate dynamic routes for blog posts
-  const dynamicRoutes = posts.map(post => ({
+  const dynamicRoutes: MetadataRoute.Sitemap = posts.map(post => ({
     url: `https://neerajrekwar.github.io/blog/${post.slug}`,
     lastModified: post.date ? new Date(post.date) : new Date(),
-    changeFrequency: 'weekly',
+    changeFrequency: 'weekly', // Typed correctly
     priority: 0.7,
   }));