diff --git a/data/web/corefork.telegram.org/api/layers.html b/data/web/corefork.telegram.org/api/layers.html
index bc54e67989..6e286614ff 100644
--- a/data/web/corefork.telegram.org/api/layers.html
+++ b/data/web/corefork.telegram.org/api/layers.html
@@ -114,6 +114,7 @@
 <a href="/method/bots.setBotInfo">bots.setBotInfo</a>#a365df7a flags:<a href="/type/%23">#</a> lang_code:<a href="/type/string">string</a> about:flags.0?<a href="/type/string">string</a> description:flags.1?<a href="/type/string">string</a> = <a href="/type/Bool">Bool</a>;
 <a href="/method/bots.getBotInfo">bots.getBotInfo</a>#75ec12e6 lang_code:<a href="/type/string">string</a> = <a href="/type/Vector%20t">Vector</a>&lt;<a href="/type/string">string</a>&gt;;<br></code></pre></div>
 <h3><a class="anchor" href="#layer-153" id="layer-153" name="layer-153"><i class="anchor-icon"></i></a><a href="/schema?layer=153">Layer 153</a></h3>
+<p>Allow bots to modify stickersets they created, allow assigning keywords to <a href="/api/custom-emoji">custom emoji stickers</a>, allow changing the thumbnail of <a href="/api/custom-emoji">custom emoji stickersets</a> and improve <a href="/api/config">client configuration caching</a>.  </p>
 <h4><a class="anchor" href="#schema-changes" id="schema-changes" name="schema-changes"><i class="anchor-icon"></i></a>Schema changes</h4>
 <h5><a class="anchor" href="#new-methods" id="new-methods" name="new-methods"><i class="anchor-icon"></i></a>New Methods</h5>
 <ul>
diff --git a/data/web/corefork.telegram.org/method/stickers.changeSticker b/data/web/corefork.telegram.org/method/stickers.changeSticker
index 8227a5b7b4..38b4d92e18 100644
--- a/data/web/corefork.telegram.org/method/stickers.changeSticker
+++ b/data/web/corefork.telegram.org/method/stickers.changeSticker
@@ -42,7 +42,7 @@
   <div class="dev_page_bread_crumbs"><ul class="breadcrumb clearfix"><li><a  href="/api" >API</a></li><i class="icon icon-breadcrumb-divider"></i><li><a  href="/methods" >All Methods</a></li><i class="icon icon-breadcrumb-divider"></i><li><a  href="/method/stickers.changeSticker" >stickers.changeSticker</a></li></ul></div>
   <h1 id="dev_page_title">stickers.changeSticker</h1>
   
-  <div id="dev_page_content"><p>Update the keywords, emojis or <a href="/api/stickers#mask-stickers">mask coordinates</a> of a sticker</p>
+  <div id="dev_page_content"><p>Update the keywords, emojis or <a href="/api/stickers#mask-stickers">mask coordinates</a> of a sticker, bots only.</p>
 <p><div class="clearfix">
   <ul class="dev_layer_select slightly-pull-right nav nav-pills">
     <li class="dropdown">
diff --git a/data/web/corefork.telegram.org/method/stickers.setStickerSetThumb b/data/web/corefork.telegram.org/method/stickers.setStickerSetThumb
index 7615d83a50..cc055f6d0f 100644
--- a/data/web/corefork.telegram.org/method/stickers.setStickerSetThumb
+++ b/data/web/corefork.telegram.org/method/stickers.setStickerSetThumb
@@ -82,12 +82,12 @@
 <tr>
 <td><strong>thumb</strong></td>
 <td style="text-align: center;"><a href="/mtproto/TL-combinators#conditional-fields">flags</a>.0?<a href="/type/InputDocument">InputDocument</a></td>
-<td>Thumbnail</td>
+<td>Thumbnail (only for normal stickersets, not custom emoji stickersets).</td>
 </tr>
 <tr>
 <td><strong>thumb_document_id</strong></td>
 <td style="text-align: center;"><a href="/mtproto/TL-combinators#conditional-fields">flags</a>.1?<a href="/type/long">long</a></td>
-<td> </td>
+<td>Only for <a href="/api/custom-emoji">custom emoji stickersets</a>, ID of a custom emoji present in the set to use as thumbnail; pass 0 to fallback to the first custom emoji of the set.</td>
 </tr>
 </tbody>
 </table>