diff --git a/xep-0004.xml b/xep-0004.xml
index 304eade5..f87cbaba 100644
--- a/xep-0004.xml
+++ b/xep-0004.xml
@@ -27,6 +27,12 @@
     &jer;
     &temas;
     &stpeter;
+    <revision>
+      <version>2.12.1</version>
+      <date>2021-06-08</date>
+      <initials>ssw</initials>
+      <remark><p>Add missing "one" in a sentence (editorial).</p></remark>
+    </revision>
     <revision>
       <version>2.12.0</version>
       <date>2021-02-27</date>