diff --git a/boot.php b/boot.php
index 669326dc63..92741eaee8 100644
--- a/boot.php
+++ b/boot.php
@@ -3,8 +3,8 @@
 set_time_limit(0);
 
 define ( 'FRIENDIKA_VERSION',      '2.1.945' );
-define ( 'DFRN_PROTOCOL_VERSION',  '2.2'  );
-define ( 'DB_UPDATE_VERSION',      1048   );
+define ( 'DFRN_PROTOCOL_VERSION',  '2.21'    );
+define ( 'DB_UPDATE_VERSION',      1048      );
 
 define ( 'EOL',                    "<br />\r\n"     );
 define ( 'ATOM_TIME',              'Y-m-d\TH:i:s\Z' );