diff --git a/sitemap.xml b/sitemap.xml
index fd9f682..dcde8c4 100644
--- a/sitemap.xml
+++ b/sitemap.xml
@@ -6,38 +6,38 @@
             http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd">
 <url>
   <loc>http://www.restapitutorial.com/</loc>
-  <lastmod>2015-02-08T12:55:39+00:00</lastmod>
+  <lastmod>2015-05-29T12:55:39+00:00</lastmod>
 </url>
 <url>
   <loc>http://www.restapitutorial.com/lessons/whatisrest.html</loc>
-  <lastmod>2014-05-29T12:55:39+00:00</lastmod>
+  <lastmod>2015-05-29T12:55:39+00:00</lastmod>
 </url>
 <url>
   <loc>http://www.restapitutorial.com/lessons/restquicktips.html</loc>
-  <lastmod>2014-11-25T21:54:09+07:00</lastmod>
+  <lastmod>2015-05-29T21:54:09+07:00</lastmod>
 </url>
 <url>
   <loc>http://www.restapitutorial.com/lessons/httpmethods.html</loc>
-  <lastmod>2015-02-08T12:55:39+00:00</lastmod>
+  <lastmod>2015-05-29T12:55:39+00:00</lastmod>
 </url>
 <url>
   <loc>http://www.restapitutorial.com/lessons/restfulresourcenaming.html</loc>
-  <lastmod>2015-03-31T12:55:39+00:00</lastmod>
+  <lastmod>2015-05-29T12:55:39+00:00</lastmod>
 </url>
 <url>
   <loc>http://www.restapitutorial.com/lessons/idempotency.html</loc>
-  <lastmod>2014-05-29T12:55:39+00:00</lastmod>
+  <lastmod>2015-05-29T12:55:39+00:00</lastmod>
 </url>
 <url>
   <loc>http://www.restapitutorial.com/httpstatuscodes.html</loc>
-  <lastmod>2014-05-29T12:55:39+00:00</lastmod>
+  <lastmod>2015-05-29T12:55:39+00:00</lastmod>
 </url>
 <url>
   <loc>http://www.restapitutorial.com/resources.html</loc>
-  <lastmod>2015-03-31T12:55:39+00:00</lastmod>
+  <lastmod>2015-05-29T12:55:39+00:00</lastmod>
 </url>
 <url>
   <loc>http://www.restapitutorial.com/index.html</loc>
-  <lastmod>2015-05-04T12:55:39+00:00</lastmod>
+  <lastmod>2015-05-29T12:55:39+00:00</lastmod>
 </url>
 </urlset>