diff --git a/src/changes.html b/src/changes.html
index 10d3d3e..8daa3f4 100644
--- a/src/changes.html
+++ b/src/changes.html
@@ -92,6 +92,10 @@ <h4 id="chg_presm">Changes to <a href="#presm"></a></h4>
       existing implementations.
       The <code class="attribute">groupalign</code> attribute on table
       elements is no longer supported.</li>
+    <li>The deprecated <code class="element">mo</code>attributes, <code class="attribute">fence</code>
+      and <code class="attribute">separator</code>, have been removed
+      (and are also no longer listed as properties in <a href="#oper-dict"></a>).
+      They are still valid in the <code>mathml4-legacy</code> schema, but invalid in the default schema.
    </ul>
 
   </section>
@@ -203,7 +207,7 @@ <h4 id="chg_opdict">Changes to <a href="#oper-dict"></a></h4>
     <li>A new <q>compact</q> presentation is provided as well as the
     tabular presentation used previously.</li>
 
-    <li>The underlying data files were updated to Unicode 14/15.</li>
+    <li>The underlying data files were updated to Unicode 14/15/16.</li>
    </ul>