diff --git a/sitemap.xml b/sitemap.xml
index dcde8c4..fa9ded7 100644
--- a/sitemap.xml
+++ b/sitemap.xml
@@ -10,34 +10,34 @@
 </url>
 <url>
   <loc>http://www.restapitutorial.com/lessons/whatisrest.html</loc>
-  <lastmod>2015-05-29T12:55:39+00:00</lastmod>
+  <lastmod>2015-08-31T12:55:39+00:00</lastmod>
 </url>
 <url>
   <loc>http://www.restapitutorial.com/lessons/restquicktips.html</loc>
-  <lastmod>2015-05-29T21:54:09+07:00</lastmod>
+  <lastmod>2015-08-31T21:54:09+07:00</lastmod>
 </url>
 <url>
   <loc>http://www.restapitutorial.com/lessons/httpmethods.html</loc>
-  <lastmod>2015-05-29T12:55:39+00:00</lastmod>
+  <lastmod>2015-08-31T12:55:39+00:00</lastmod>
 </url>
 <url>
   <loc>http://www.restapitutorial.com/lessons/restfulresourcenaming.html</loc>
-  <lastmod>2015-05-29T12:55:39+00:00</lastmod>
+  <lastmod>2015-08-31T12:55:39+00:00</lastmod>
 </url>
 <url>
   <loc>http://www.restapitutorial.com/lessons/idempotency.html</loc>
-  <lastmod>2015-05-29T12:55:39+00:00</lastmod>
+  <lastmod>2015-08-31T12:55:39+00:00</lastmod>
 </url>
 <url>
   <loc>http://www.restapitutorial.com/httpstatuscodes.html</loc>
-  <lastmod>2015-05-29T12:55:39+00:00</lastmod>
+  <lastmod>2015-08-31T12:55:39+00:00</lastmod>
 </url>
 <url>
   <loc>http://www.restapitutorial.com/resources.html</loc>
-  <lastmod>2015-05-29T12:55:39+00:00</lastmod>
+  <lastmod>2015-08-31T12:55:39+00:00</lastmod>
 </url>
 <url>
   <loc>http://www.restapitutorial.com/index.html</loc>
-  <lastmod>2015-05-29T12:55:39+00:00</lastmod>
+  <lastmod>2015-08-31T12:55:39+00:00</lastmod>
 </url>
 </urlset>