diff --git a/docs/en-US/changed-API-commands-4.2.xml b/docs/en-US/changed-API-commands-4.2.xml
index cbaa2e3fa92..26f10ff6037 100644
--- a/docs/en-US/changed-API-commands-4.2.xml
+++ b/docs/en-US/changed-API-commands-4.2.xml
@@ -101,6 +101,22 @@
             </itemizedlist>
           </entry>
         </row>
+        <row>
+          <entry><para>UpdatePhysicalNetwork</para></entry>
+          <entry>
+            <para>Added the following request parameters:</para>
+            <itemizedlist>
+              <listitem>
+                <para>vlan (adds a new VLAN range to the existing VLAN range)</para>
+              </listitem>
+              <listitem>
+                <para>removelan (removes the specified VLAN range)</para>
+              </listitem>
+            </itemizedlist>
+            <note><para>The removevlan and vlan parameters can be used together. If the VLAN range that you are trying
+                to remove is in use, the operation will not succeed.</para></note>
+          </entry>
+        </row>
       </tbody>
     </tgroup>
   </informaltable>