document modificationtime attribute of zip added many moons ago

manual/Tasks/ear.html

@@ -273,6 +273,16 @@ to a value other than its default, <code>&quot;add&quot;</code>.</b></p>
       zip task page</a></td>
     <td align="center" valign="top">No, default is "never"</td>
   </tr>
+  <tr>
+    <td valign="top">modificationtime</td>
+    <td valign="top">Set all stored file modification times to the
+    given time. This can either be a number interpreted as
+    milliseconds since 1970-01-01T00:00:00Z or a string that can be
+    parsed as a ISO 8601 timestamp with optional timezone.
+      <em>Since Ant 1.9.10</em>.
+    </td>
+    <td align="center" valign="top">No</td>
+  </tr>
 </table>
 
 <h3>Nested elements</h3>

manual/Tasks/jar.html

@@ -332,6 +332,16 @@ to a value other than its default, <code>"add"</code>.</b></p>
       zip task page</a></td>
     <td align="center" valign="top">No, default is "never"</td>
   </tr>
+  <tr>
+    <td valign="top">modificationtime</td>
+    <td valign="top">Set all stored file modification times to the
+    given time. This can either be a number interpreted as
+    milliseconds since 1970-01-01T00:00:00Z or a string that can be
+    parsed as a ISO 8601 timestamp with optional timezone.
+      <em>Since Ant 1.9.10</em>.
+    </td>
+    <td align="center" valign="top">No</td>
+  </tr>
 </table>
 
 <h3>Nested elements</h3>

manual/Tasks/war.html

@@ -276,6 +276,16 @@ to a value other than its default, <code>&quot;add&quot;</code>.</b></p>
       zip task page</a></td>
     <td align="center" valign="top">No, default is "never"</td>
   </tr>
+  <tr>
+    <td valign="top">modificationtime</td>
+    <td valign="top">Set all stored file modification times to the
+    given time. This can either be a number interpreted as
+    milliseconds since 1970-01-01T00:00:00Z or a string that can be
+    parsed as a ISO 8601 timestamp with optional timezone.
+      <em>Since Ant 1.9.10</em>.
+    </td>
+    <td align="center" valign="top">No</td>
+  </tr>
 </table>
 
 <h3>Nested elements</h3>

manual/Tasks/zip.html

@@ -280,6 +280,16 @@ archive.</p>
       <br/>See also the <a href="#zip64">discussion below</a></td>
     <td align="center" valign="top">No, default is "as-needed"</td>
   </tr>
+  <tr>
+    <td valign="top">modificationtime</td>
+    <td valign="top">Set all stored file modification times to the
+    given time. This can either be a number interpreted as
+    milliseconds since 1970-01-01T00:00:00Z or a string that can be
+    parsed as a ISO 8601 timestamp with optional timezone.
+      <em>Since Ant 1.9.10</em>.
+    </td>
+    <td align="center" valign="top">No</td>
+  </tr>
 </table>
 
 <h3><a name="encoding">Encoding of File Names</a></h3>