diff --git a/docs/sitemap.xml b/docs/sitemap.xml
index 2dcde3c7475b473ea5989396e0ca65c643baceb3..37d13e88a2a62aa46b71b7e7c76b0b7dbc071ce7 100644
--- a/docs/sitemap.xml
+++ b/docs/sitemap.xml
@@ -8,7 +8,7 @@
       
     <url>
       <loc>https://nn.labml.ai/gan/wasserstein/index.html</loc>
-      <lastmod>2021-05-09T16:30:00+00:00</lastmod>
+      <lastmod>2021-08-08T16:30:00+00:00</lastmod>
       <priority>1.00</priority>
     </url>
     
@@ -71,7 +71,7 @@
 
     <url>
       <loc>https://nn.labml.ai/gan/cycle_gan/index.html</loc>
-      <lastmod>2021-05-07T16:30:00+00:00</lastmod>
+      <lastmod>2021-08-08T16:30:00+00:00</lastmod>
       <priority>1.00</priority>
     </url>
     
@@ -113,14 +113,14 @@
 
     <url>
       <loc>https://nn.labml.ai/hypernetworks/hyper_lstm.html</loc>
-      <lastmod>2021-02-27T16:30:00+00:00</lastmod>
+      <lastmod>2021-08-08T16:30:00+00:00</lastmod>
       <priority>1.00</priority>
     </url>
     
 
     <url>
       <loc>https://nn.labml.ai/normalization/weight_standardization/index.html</loc>
-      <lastmod>2021-07-04T16:30:00+00:00</lastmod>
+      <lastmod>2021-08-08T16:30:00+00:00</lastmod>
       <priority>1.00</priority>
     </url>
     
@@ -169,14 +169,14 @@
 
     <url>
       <loc>https://nn.labml.ai/normalization/batch_channel_norm/index.html</loc>
-      <lastmod>2021-07-04T16:30:00+00:00</lastmod>
+      <lastmod>2021-08-08T16:30:00+00:00</lastmod>
       <priority>1.00</priority>
     </url>
     
 
     <url>
       <loc>https://nn.labml.ai/normalization/group_norm/index.html</loc>
-      <lastmod>2021-04-28T16:30:00+00:00</lastmod>
+      <lastmod>2021-08-08T16:30:00+00:00</lastmod>
       <priority>1.00</priority>
     </url>
     
@@ -190,7 +190,7 @@
 
     <url>
       <loc>https://nn.labml.ai/normalization/batch_norm/index.html</loc>
-      <lastmod>2021-02-27T16:30:00+00:00</lastmod>
+      <lastmod>2021-08-08T16:30:00+00:00</lastmod>
       <priority>1.00</priority>
     </url>
     
@@ -281,7 +281,7 @@
 
     <url>
       <loc>https://nn.labml.ai/index.html</loc>
-      <lastmod>2021-07-26T16:30:00+00:00</lastmod>
+      <lastmod>2021-08-08T16:30:00+00:00</lastmod>
       <priority>1.00</priority>
     </url>
     
@@ -309,14 +309,14 @@
 
     <url>
       <loc>https://nn.labml.ai/cfr/kuhn/index.html</loc>
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+      <lastmod>2021-08-08T16:30:00+00:00</lastmod>
       <priority>1.00</priority>
     </url>
     
 
     <url>
       <loc>https://nn.labml.ai/cfr/index.html</loc>
-      <lastmod>2021-06-22T16:30:00+00:00</lastmod>
+      <lastmod>2021-08-08T16:30:00+00:00</lastmod>
       <priority>1.00</priority>
     </url>
     
@@ -463,7 +463,7 @@
 
     <url>
       <loc>https://nn.labml.ai/transformers/gpt/index.html</loc>
-      <lastmod>2021-02-27T16:30:00+00:00</lastmod>
+      <lastmod>2021-08-08T16:30:00+00:00</lastmod>
       <priority>1.00</priority>
     </url>
     
@@ -498,14 +498,14 @@
 
     <url>
       <loc>https://nn.labml.ai/transformers/fast_weights/index.html</loc>
-      <lastmod>2021-03-14T16:30:00+00:00</lastmod>
+      <lastmod>2021-08-08T16:30:00+00:00</lastmod>
       <priority>1.00</priority>
     </url>
     
 
     <url>
       <loc>https://nn.labml.ai/transformers/fast_weights/experiment.html</loc>
-      <lastmod>2021-03-14T16:30:00+00:00</lastmod>
+      <lastmod>2021-08-08T16:30:00+00:00</lastmod>
       <priority>1.00</priority>
     </url>
     
@@ -519,14 +519,14 @@
 
     <url>
       <loc>https://nn.labml.ai/transformers/feedback/index.html</loc>
-      <lastmod>2021-03-15T16:30:00+00:00</lastmod>
+      <lastmod>2021-08-08T16:30:00+00:00</lastmod>
       <priority>1.00</priority>
     </url>
     
 
     <url>
       <loc>https://nn.labml.ai/transformers/feedback/experiment.html</loc>
-      <lastmod>2021-02-27T16:30:00+00:00</lastmod>
+      <lastmod>2021-08-08T16:30:00+00:00</lastmod>
       <priority>1.00</priority>
     </url>
     
@@ -547,7 +547,7 @@
 
     <url>
       <loc>https://nn.labml.ai/transformers/glu_variants/simple.html</loc>
-      <lastmod>2021-02-27T16:30:00+00:00</lastmod>
+      <lastmod>2021-08-08T16:30:00+00:00</lastmod>
       <priority>1.00</priority>
     </url>
     
@@ -589,7 +589,7 @@
 
     <url>
       <loc>https://nn.labml.ai/transformers/switch/index.html</loc>
-      <lastmod>2021-02-27T16:30:00+00:00</lastmod>
+      <lastmod>2021-08-08T16:30:00+00:00</lastmod>
       <priority>1.00</priority>
     </url>
     
@@ -652,7 +652,7 @@
 
     <url>
       <loc>https://nn.labml.ai/transformers/compressive/index.html</loc>
-      <lastmod>2021-02-27T16:30:00+00:00</lastmod>
+      <lastmod>2021-08-08T16:30:00+00:00</lastmod>
       <priority>1.00</priority>
     </url>
     
@@ -687,7 +687,7 @@
 
     <url>
       <loc>https://nn.labml.ai/transformers/xl/index.html</loc>
-      <lastmod>2021-02-27T16:30:00+00:00</lastmod>
+      <lastmod>2021-08-08T16:30:00+00:00</lastmod>
       <priority>1.00</priority>
     </url>
     
@@ -708,7 +708,7 @@
 
     <url>
       <loc>https://nn.labml.ai/capsule_networks/index.html</loc>
-      <lastmod>2021-03-05T16:30:00+00:00</lastmod>
+      <lastmod>2021-08-08T16:30:00+00:00</lastmod>
       <priority>1.00</priority>
     </url>
     
@@ -813,7 +813,7 @@
 
     <url>
       <loc>https://nn.labml.ai/rl/ppo/index.html</loc>
-      <lastmod>2021-03-30T16:30:00+00:00</lastmod>
+      <lastmod>2021-08-08T16:30:00+00:00</lastmod>
       <priority>1.00</priority>
     </url>
     
@@ -827,7 +827,7 @@
 
     <url>
       <loc>https://nn.labml.ai/rl/ppo/experiment.html</loc>
-      <lastmod>2021-03-30T16:30:00+00:00</lastmod>
+      <lastmod>2021-08-08T16:30:00+00:00</lastmod>
       <priority>1.00</priority>
     </url>