diff --git a/xep-0087.xml b/xep-0087.xml
index b812c5de..0d99e714 100644
--- a/xep-0087.xml
+++ b/xep-0087.xml
@@ -23,6 +23,12 @@
     <email>temas@jabber.org</email>
     <jid>temas@jabber.org</jid>
   </author>
+  <revision>
+    <version>0.1.1</version>
+    <date>2022-03-22</date>
+    <initials>gl</initials>
+    <remark>Fix incorrect URL to SI namespace.</remark>
+  </revision>
   <revision>
     <version>0.1</version>
     <date>2003-05-22</date>