diff --git a/index.html b/index.html
index 0a0dc88..1dbc38b 100644
--- a/index.html
+++ b/index.html
@@ -93,7 +93,7 @@
 									<li><a href="lessons/restquicktips.html">REST Quick Tips</a></li>
 									<li><a href="lessons/httpmethods.html">HTTP Methods</a></li>
 									<li><a href="lessons/restfulresourcenaming.html">Resource Naming</a></li>
-									<li><a href="idempotency.html">Idempotence</a></li>
+									<li><a href="lessons/idempotency.html">Idempotence</a></li>
 								</ul>
 							</li>
 							<li><a href="httpstatuscodes.html">HTTP Status Codes</a></li>
diff --git a/resources.html b/resources.html
index 4ab7925..7ae80b6 100644
--- a/resources.html
+++ b/resources.html
@@ -73,7 +73,7 @@
 									<li><a href="lessons/restquicktips.html">REST Quick Tips</a></li>
 									<li><a href="lessons/httpmethods.html">HTTP Methods</a></li>
 									<li><a href="lessons/restfulresourcenaming.html">Resource Naming</a></li>
-									<li><a href="idempotency.html">Idempotence</a></li>
+									<li><a href="lessons/idempotency.html">Idempotence</a></li>
 								</ul>
 							</li>
 							<li><a href="httpstatuscodes.html">HTTP Status Codes</a></li>
diff --git a/sitemap.xml b/sitemap.xml
index 7a21796..a602f1b 100644
--- a/sitemap.xml
+++ b/sitemap.xml
@@ -6,7 +6,7 @@
             http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd">
 <url>
   <loc>http://www.restapitutorial.com/</loc>
-  <lastmod>2013-09-04T14:55:39+00:00</lastmod>
+  <lastmod>2013-09-21T14:55:39+00:00</lastmod>
 </url>
 <url>
   <loc>http://www.restapitutorial.com/lessons/whatisrest.html</loc>
@@ -26,7 +26,7 @@
 </url>
 <url>
   <loc>http://www.restapitutorial.com/lessons/idempotency.html</loc>
-  <lastmod>2013-09-04T14:55:39+00:00</lastmod>
+  <lastmod>2013-09-21T14:55:39+00:00</lastmod>
 </url>
 <url>
   <loc>http://www.restapitutorial.com/httpstatuscodes.html</loc>
@@ -34,10 +34,10 @@
 </url>
 <url>
   <loc>http://www.restapitutorial.com/resources.html</loc>
-  <lastmod>2013-09-04T14:55:39+00:00</lastmod>
+  <lastmod>2013-09-21T14:55:39+00:00</lastmod>
 </url>
 <url>
   <loc>http://www.restapitutorial.com/index.html</loc>
-  <lastmod>2013-09-04T14:55:39+00:00</lastmod>
+  <lastmod>2013-09-21T14:55:39+00:00</lastmod>
 </url>
 </urlset>
\ No newline at end of file