diff --git a/db/db.code.version.txt b/db/db.code.version.txt
index 3bc92d44..8f897c85 100644
--- a/db/db.code.version.txt
+++ b/db/db.code.version.txt
@@ -1 +1 @@
-201
+202
diff --git a/db/db.update.202.sql b/db/db.update.202.sql
new file mode 100644
index 00000000..f45f93d3
--- /dev/null
+++ b/db/db.update.202.sql
@@ -0,0 +1,4 @@
+ALTER TABLE `accounts` ADD `link_username_to_email` ENUM( 'yes', 'no' ) NOT NULL AFTER `username` ;
+UPDATE `accounts` SET `link_username_to_email`='yes';
+UPDATE `accounts` SET `link_username_to_email`='no' WHERE `username`!=`email`;
+