README.md in lockbox-0.3.2 vs README.md in lockbox-0.3.3

@@ -174,10 +174,10 @@
 end
 ```
 
 Finally, drop the unencrypted column.
 
-If adding blind indexes, Lockbox can migrate them at the same time.
+If adding blind indexes, mark them as `migrating` during this process as well.
 
 ```ruby
 class User < ApplicationRecord
   blind_index :email, migrating: true
 end