diff --git a/appendices/wrappers.xml b/appendices/wrappers.xml
index c404ab98e9..dca885d624 100644
--- a/appendices/wrappers.xml
+++ b/appendices/wrappers.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.67 $ -->
+<!-- $Revision: 1.68 $ -->
 <appendix id="wrappers">
  <title>List of Supported Protocols/Wrappers</title>
  <para>
@@ -378,6 +378,13 @@ $result = file_get_contents('http://example.com/submit.php', false, $context);
        </entry>
        <entry>20</entry>
       </row>
+      <row>
+       <entry><literal>protocol_version</literal></entry>
+       <entry>
+        HTTP protocol version. Added in PHP 5.1.0.
+       </entry>
+       <entry>1.0</entry>
+      </row>
      </tbody>
     </tgroup>
    </table>