Missing Ant task attribute.
diff --git a/org.jacoco.doc/docroot/doc/ant.html b/org.jacoco.doc/docroot/doc/ant.html
index 7e32af4..18f36dc 100644
--- a/org.jacoco.doc/docroot/doc/ant.html
+++ b/org.jacoco.doc/docroot/doc/ant.html
@@ -302,6 +302,11 @@
       <td>Directory to create the report in.</td>

       <td><i>none (required)</i></td>

     </tr>

+    <tr>

+      <td><code>footer</code></td>

+      <td>Footer text for each report page.</td>

+      <td><i>No footer</i></td>

+    </tr>

   </tbody>

 </table>