diff --git a/docs/sitemap.xml b/docs/sitemap.xml
index af2a2095..ef956622 100644
--- a/docs/sitemap.xml
+++ b/docs/sitemap.xml
@@ -6,13 +6,6 @@
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       <lastmod>2021-05-09T16:30:00+00:00</lastmod>
@@ -27,13 +20,6 @@
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@@ -41,13 +27,6 @@
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@@ -55,13 +34,6 @@
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@@ -69,13 +41,6 @@
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@@ -83,13 +48,6 @@
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       <lastmod>2021-05-07T16:30:00+00:00</lastmod>
@@ -97,13 +55,6 @@
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       <lastmod>2021-06-21T16:30:00+00:00</lastmod>
@@ -111,13 +62,6 @@
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       <lastmod>2021-06-21T16:30:00+00:00</lastmod>
@@ -125,13 +69,6 @@
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       <lastmod>2021-05-07T16:30:00+00:00</lastmod>
@@ -139,13 +76,6 @@
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@@ -167,13 +97,6 @@
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@@ -265,20 +188,6 @@
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       <lastmod>2021-04-28T16:30:00+00:00</lastmod>
@@ -286,13 +195,6 @@
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@@ -335,13 +230,6 @@
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@@ -356,13 +244,6 @@
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@@ -370,13 +251,6 @@
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@@ -384,13 +258,6 @@
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       <lastmod>2021-02-27T16:30:00+00:00</lastmod>
@@ -398,13 +265,6 @@
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@@ -482,13 +342,6 @@
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       <lastmod>2021-06-21T16:30:00+00:00</lastmod>
@@ -498,7 +351,7 @@
 
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       <priority>1.00</priority>
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@@ -552,13 +405,6 @@
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       <lastmod>2021-02-02T16:30:00+00:00</lastmod>
@@ -629,13 +475,6 @@
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       <lastmod>2021-04-07T16:30:00+00:00</lastmod>
@@ -657,13 +496,6 @@
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       <lastmod>2021-06-07T16:30:00+00:00</lastmod>
@@ -713,13 +545,6 @@
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       <lastmod>2021-02-27T16:30:00+00:00</lastmod>
@@ -748,13 +573,6 @@
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       <lastmod>2021-03-11T16:30:00+00:00</lastmod>
@@ -769,13 +587,6 @@
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       <lastmod>2021-03-14T16:30:00+00:00</lastmod>
@@ -790,13 +601,6 @@
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-      <priority>1.00</priority>
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       <lastmod>2021-03-15T16:30:00+00:00</lastmod>
@@ -804,13 +608,6 @@
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       <lastmod>2021-02-27T16:30:00+00:00</lastmod>
@@ -825,13 +622,6 @@
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-    <url>
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-      <lastmod>2021-02-27T16:30:00+00:00</lastmod>
-      <priority>1.00</priority>
-    </url>
-    
-
     <url>
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       <lastmod>2021-02-02T16:30:00+00:00</lastmod>
@@ -853,13 +643,6 @@
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-      <lastmod>2021-06-16T16:30:00+00:00</lastmod>
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-    
-
     <url>
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       <lastmod>2021-06-16T16:30:00+00:00</lastmod>
@@ -874,13 +657,6 @@
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       <loc>https://nn.labml.ai/transformers/switch/index.html</loc>
       <lastmod>2021-02-27T16:30:00+00:00</lastmod>
@@ -888,13 +664,6 @@
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-      <priority>1.00</priority>
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-
     <url>
       <loc>https://nn.labml.ai/transformers/switch/experiment.html</loc>
       <lastmod>2021-05-26T16:30:00+00:00</lastmod>
@@ -923,13 +692,6 @@
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-      <lastmod>2021-06-06T16:30:00+00:00</lastmod>
-      <priority>1.00</priority>
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-    
-
     <url>
       <loc>https://nn.labml.ai/transformers/mlm/experiment.html</loc>
       <lastmod>2021-06-06T16:30:00+00:00</lastmod>
@@ -944,13 +706,6 @@
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-    <url>
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-      <lastmod>2021-06-02T16:30:00+00:00</lastmod>
-      <priority>1.00</priority>
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-    
-
     <url>
       <loc>https://nn.labml.ai/transformers/aft/experiment.html</loc>
       <lastmod>2021-06-04T16:30:00+00:00</lastmod>
@@ -965,13 +720,6 @@
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-    <url>
-      <loc>https://nn.labml.ai/transformers/compressive/experiment.html</loc>
-      <lastmod>2021-02-19T16:30:00+00:00</lastmod>
-      <priority>1.00</priority>
-    </url>
-    
-
     <url>
       <loc>https://nn.labml.ai/transformers/compressive/index.html</loc>
       <lastmod>2021-02-27T16:30:00+00:00</lastmod>
@@ -979,13 +727,6 @@
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-    <url>
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-      <priority>1.00</priority>
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     <url>
       <loc>https://nn.labml.ai/transformers/compressive/experiment.html</loc>
       <lastmod>2021-02-19T16:30:00+00:00</lastmod>
@@ -1007,13 +748,6 @@
     </url>
     
 
-    <url>
-      <loc>https://nn.labml.ai/transformers/fnet/readme.html</loc>
-      <lastmod>2021-05-26T16:30:00+00:00</lastmod>
-      <priority>1.00</priority>
-    </url>
-    
-
     <url>
       <loc>https://nn.labml.ai/transformers/fnet/experiment.html</loc>
       <lastmod>2021-06-02T16:30:00+00:00</lastmod>
@@ -1021,13 +755,6 @@
     </url>
     
 
-    <url>
-      <loc>https://nn.labml.ai/transformers/xl/experiment.html</loc>
-      <lastmod>2021-02-19T16:30:00+00:00</lastmod>
-      <priority>1.00</priority>
-    </url>
-    
-
     <url>
       <loc>https://nn.labml.ai/transformers/xl/index.html</loc>
       <lastmod>2021-02-27T16:30:00+00:00</lastmod>
@@ -1035,13 +762,6 @@
     </url>
     
 
-    <url>
-      <loc>https://nn.labml.ai/transformers/xl/readme.html</loc>
-      <lastmod>2021-02-27T16:30:00+00:00</lastmod>
-      <priority>1.00</priority>
-    </url>
-    
-
     <url>
       <loc>https://nn.labml.ai/transformers/xl/experiment.html</loc>
       <lastmod>2021-02-07T16:30:00+00:00</lastmod>
@@ -1056,13 +776,6 @@
     </url>
     
 
-    <url>
-      <loc>https://nn.labml.ai/capsule_networks/mnist.html</loc>
-      <lastmod>2021-02-27T16:30:00+00:00</lastmod>
-      <priority>1.00</priority>
-    </url>
-    
-
     <url>
       <loc>https://nn.labml.ai/capsule_networks/index.html</loc>
       <lastmod>2021-03-05T16:30:00+00:00</lastmod>
@@ -1070,13 +783,6 @@
     </url>
     
 
-    <url>
-      <loc>https://nn.labml.ai/capsule_networks/readme.html</loc>
-      <lastmod>2021-03-05T16:30:00+00:00</lastmod>
-      <priority>1.00</priority>
-    </url>
-    
-
     <url>
       <loc>https://nn.labml.ai/capsule_networks/mnist.html</loc>
       <lastmod>2021-02-14T16:30:00+00:00</lastmod>
@@ -1140,13 +846,6 @@
     </url>
     
 
-    <url>
-      <loc>https://nn.labml.ai/rl/ppo/experiment.html</loc>
-      <lastmod>2021-03-30T16:30:00+00:00</lastmod>
-      <priority>1.00</priority>
-    </url>
-    
-
     <url>
       <loc>https://nn.labml.ai/rl/ppo/index.html</loc>
       <lastmod>2021-03-30T16:30:00+00:00</lastmod>
@@ -1161,13 +860,6 @@
     </url>
     
 
-    <url>
-      <loc>https://nn.labml.ai/rl/ppo/readme.html</loc>
-      <lastmod>2021-03-30T16:30:00+00:00</lastmod>
-      <priority>1.00</priority>
-    </url>
-    
-
     <url>
       <loc>https://nn.labml.ai/rl/ppo/experiment.html</loc>
       <lastmod>2021-03-30T16:30:00+00:00</lastmod>
diff --git a/docs/transformers/feedback/readme.html b/docs/transformers/feedback/readme.html
index 9b912c8c..009d9490 100644
--- a/docs/transformers/feedback/readme.html
+++ b/docs/transformers/feedback/readme.html
@@ -159,4 +159,4 @@ <h1><a href="https://nn.labml.ai/transformers/feedback/index.html">Feedback Tran
     handleImages()
 </script>
 </body>
-</html>
+</html>
\ No newline at end of file
diff --git a/utils/sitemap.py b/utils/sitemap.py
index 5d7bc4de..5877b250 100644
--- a/utils/sitemap.py
+++ b/utils/sitemap.py
@@ -14,6 +14,9 @@ def collect(path: Path):
             return []
 
         html = path.relative_to(HOME)
+        if html.suffix not in {'.py'}:
+            return []
+
         if html.stem == '__init__':
             html = html.parent / 'index.html'
         else: