README.md in lockbox-1.4.0 vs README.md in lockbox-1.4.1

@@ -70,11 +70,11 @@
 ## Active Record
 
 Create a migration with:
 
 ```ruby
-class AddEmailCiphertextToUsers < ActiveRecord::Migration[7.1]
+class AddEmailCiphertextToUsers < ActiveRecord::Migration[7.2]
   def change
     add_column :users, :email_ciphertext, :text
   end
 end
 ```
@@ -249,11 +249,11 @@
 **Note:** Action Text uses direct uploads for files, which cannot be encrypted with application-level encryption like Lockbox. This only encrypts the database field.
 
 Create a migration with:
 
 ```ruby
-class AddBodyCiphertextToRichTexts < ActiveRecord::Migration[7.1]
+class AddBodyCiphertextToRichTexts < ActiveRecord::Migration[7.2]
   def change
     add_column :action_text_rich_texts, :body_ciphertext, :text
   end
 end
 ```
@@ -380,11 +380,11 @@
 Encryption is applied to all versions after processing.
 
 You can mount the uploader [as normal](https://github.com/carrierwaveuploader/carrierwave#activerecord). With Active Record, this involves creating a migration:
 
 ```ruby
-class AddLicenseToUsers < ActiveRecord::Migration[7.1]
+class AddLicenseToUsers < ActiveRecord::Migration[7.2]
   def change
     add_column :users, :license, :string
   end
 end
 ```
@@ -908,11 +908,11 @@
 ## Binary Columns
 
 You can use `binary` columns for the ciphertext instead of `text` columns.
 
 ```ruby
-class AddEmailCiphertextToUsers < ActiveRecord::Migration[7.1]
+class AddEmailCiphertextToUsers < ActiveRecord::Migration[7.2]
   def change
     add_column :users, :email_ciphertext, :binary
   end
 end
 ```
@@ -959,11 +959,11 @@
 ```
 
 Create a migration with:
 
 ```ruby
-class MigrateToLockbox < ActiveRecord::Migration[7.1]
+class MigrateToLockbox < ActiveRecord::Migration[7.2]
   def change
     add_column :users, :name_ciphertext, :text
     add_column :users, :email_ciphertext, :text
   end
 end
@@ -992,10 +992,10 @@
 ```
 
 Then remove the previous gem from your Gemfile and drop its columns.
 
 ```ruby
-class RemovePreviousEncryptedColumns < ActiveRecord::Migration[7.1]
+class RemovePreviousEncryptedColumns < ActiveRecord::Migration[7.2]
   def change
     remove_column :users, :encrypted_name, :text
     remove_column :users, :encrypted_name_iv, :text
     remove_column :users, :encrypted_email, :text
     remove_column :users, :encrypted_email_iv, :text