diff --git a/backend.php b/backend.php
index f7dd6d178..7ea6f875c 100644
--- a/backend.php
+++ b/backend.php
@@ -28,7 +28,7 @@
 		exit;
 	}
 
-	define('SCHEMA_VERSION', 4);
+	define('SCHEMA_VERSION', 5);
 
 	require_once "sanity_check.php";
 	require_once "config.php";