diff --git a/xep-0264.xml b/xep-0264.xml
index 94c2e4bb..9af6a5bc 100644
--- a/xep-0264.xml
+++ b/xep-0264.xml
@@ -29,6 +29,14 @@
     <jid>mlundblad@jabber.org</jid>
   </author>
   &lance;
+  <revision>
+    <version>0.4.1</version>
+    <date>2022-09-05</date>
+    <initials>lnj</initials>
+    <remark>
+      <p>Update xmlns in schema (was not updated when bumping)</p>
+    </remark>
+  </revision>
   <revision>
     <version>0.4</version>
     <date>2015-08-26</date>
@@ -213,8 +221,8 @@ wish to not include a thumbnail.</p>
 
 <xs:schema
     xmlns:xs='http://www.w3.org/2001/XMLSchema'
-    targetNamespace='urn:xmpp:thumbs:0'
-    xmlns='urn:xmpp:thumbs:0'
+    targetNamespace='urn:xmpp:thumbs:1'
+    xmlns='urn:xmpp:thumbs:1'
     elementFormDefault='qualified'>
 
   <xs:annotation>