diff --git a/docs/manual/CoreTasks/echo.html b/docs/manual/CoreTasks/echo.html
index 8c441e9a9..07b59e4a4 100644
--- a/docs/manual/CoreTasks/echo.html
+++ b/docs/manual/CoreTasks/echo.html
@@ -68,7 +68,7 @@ ignored</p>
   </tr>
   <tr>
     <td valign="top">encoding</td>
-    <td valign="top">encoding to use, default is ""; the local system encoding.</td>
+    <td valign="top">encoding to use, default is ""; the local system encoding. <em>since Ant 1.7</em></td>
     <td valign="top" align="center">No</td>
   </tr>
 </table>