diff --git a/scm/xdocs/properties.xml b/scm/xdocs/properties.xml
index 35908313..905db114 100644
--- a/scm/xdocs/properties.xml
+++ b/scm/xdocs/properties.xml
@@ -46,6 +46,13 @@
               The tag to use when checking out or tagging a project.
             </td>
           </tr>
+          <tr>
+            <td>maven.scm.version</td>
+            <td>Yes</td>
+            <td>
+              The version to use when preparing a release. If omitted, you will be prompted for it.
+            </td>
+          </tr>
           <tr>
             <td>maven.scm.bootstrap.goals</td>
             <td>Yes</td>