diff --git a/bin/brakeman b/bin/brakeman
new file mode 100755
index 00000000..ace1c9ba
--- /dev/null
+++ b/bin/brakeman
@@ -0,0 +1,7 @@
+#!/usr/bin/env ruby
+require "rubygems"
+require "bundler/setup"
+
+ARGV.unshift("--ensure-latest")
+
+load Gem.bin_path("brakeman", "brakeman")
diff --git a/bin/rubocop b/bin/rubocop
new file mode 100755
index 00000000..40330c0f
--- /dev/null
+++ b/bin/rubocop
@@ -0,0 +1,8 @@
+#!/usr/bin/env ruby
+require "rubygems"
+require "bundler/setup"
+
+# explicit rubocop config increases performance slightly while avoiding config confusion.
+ARGV.unshift("--config", File.expand_path("../.rubocop.yml", __dir__))
+
+load Gem.bin_path("rubocop", "rubocop")
diff --git a/bin/setup b/bin/setup
index cf2acd18..343eee79 100755
--- a/bin/setup
+++ b/bin/setup
@@ -1,8 +1,8 @@
 #!/usr/bin/env ruby
 require "fileutils"
 
-# path to your application root.
 APP_ROOT = File.expand_path("..", __dir__)
+APP_NAME = "hmrc-manuals-api"
 
 def system!(*args)
   system(*args, exception: true)
@@ -22,4 +22,8 @@ FileUtils.chdir APP_ROOT do
 
   puts "\n== Restarting application server =="
   system! "bin/rails restart"
+
+  # puts "\n== Configuring puma-dev =="
+  # system "ln -nfs #{APP_ROOT} ~/.puma-dev/#{APP_NAME}"
+  # system "curl -Is https://#{APP_NAME}.test/up | head -n 1"
 end
diff --git a/config/application.rb b/config/application.rb
index 41e021f9..3a323f38 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -7,7 +7,7 @@
 # require "active_record/railtie"
 # require "active_storage/engine"
 require "action_controller/railtie"
-require "action_mailer/railtie"
+# require "action_mailer/railtie"
 # require "action_mailbox/engine"
 # require "action_text/engine"
 require "action_view/railtie"
@@ -21,7 +21,7 @@
 module HmrcManualsApi
   class Application < Rails::Application
     # Initialize configuration defaults for originally generated Rails version.
-    config.load_defaults 7.0
+    config.load_defaults 7.2
 
     # Please, add to the `ignore` list any other `lib` subdirectories that do
     # not contain `.rb` files, or that should not be reloaded or eager loaded.
diff --git a/config/environments/development.rb b/config/environments/development.rb
index 0b506320..9cb3e631 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -14,7 +14,7 @@
   # Show full error reports.
   config.consider_all_requests_local = true
 
-  # Enable server timing
+  # Enable server timing.
   config.server_timing = true
 
   # Enable/disable caching. By default caching is disabled.
@@ -24,20 +24,13 @@
     config.action_controller.enable_fragment_cache_logging = true
 
     config.cache_store = :memory_store
-    config.public_file_server.headers = {
-      "Cache-Control" => "public, max-age=#{2.days.to_i}",
-    }
+    config.public_file_server.headers = { "Cache-Control" => "public, max-age=#{2.days.to_i}" }
   else
     config.action_controller.perform_caching = false
 
     config.cache_store = :null_store
   end
 
-  # Don't care if the mailer can't send.
-  config.action_mailer.raise_delivery_errors = false
-
-  config.action_mailer.perform_caching = false
-
   # Print deprecation notices to the Rails logger.
   config.active_support.deprecation = :log
 
@@ -56,9 +49,12 @@
   # Annotate rendered view with file names.
   # config.action_view.annotate_rendered_view_with_filenames = true
 
-  # Raise error when a before_action's only/except options reference missing actions
+  # Raise error when a before_action's only/except options reference missing actions.
   config.action_controller.raise_on_missing_callback_actions = true
 
+  # Apply autocorrection by RuboCop to files generated by `bin/rails generate`.
+  # config.generators.apply_rubocop_autocorrect_after_generate!
+
   # Allow requests for all domains e.g. <app>.dev.gov.uk
   config.hosts.clear
 end
diff --git a/config/environments/production.rb b/config/environments/production.rb
index 87f55d06..4ecc77a6 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -37,6 +37,9 @@
   # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies.
   # config.force_ssl = true
 
+  # Skip http-to-https redirect for the default health check endpoint.
+  # config.ssl_options = { redirect: { exclude: ->(request) { request.path == "/up" } } }
+
   # Log to STDOUT by default
   config.logger = ActiveSupport::Logger.new($stdout)
     .tap  { |logger| logger.formatter = ::Logger::Formatter.new }
@@ -45,7 +48,7 @@
   # Prepend all log lines with the following tags.
   config.log_tags = [:request_id]
 
-  # Info include generic and useful information about system operation, but avoids logging too much
+  # "info" includes generic and useful information about system operation, but avoids logging too much
   # information to avoid inadvertent exposure of personally identifiable information (PII). If you
   # want to log everything, set the level to "debug".
   config.log_level = ENV.fetch("RAILS_LOG_LEVEL", "info")
@@ -57,12 +60,6 @@
   # config.active_job.queue_adapter = :resque
   # config.active_job.queue_name_prefix = "hmrc_manuals_api_production"
 
-  config.action_mailer.perform_caching = false
-
-  # Ignore bad email addresses and do not raise email delivery errors.
-  # Set this to true and configure the email server for immediate delivery to raise delivery errors.
-  # config.action_mailer.raise_delivery_errors = false
-
   # Enable locale fallbacks for I18n (makes lookups for any locale fall back to
   # the I18n.default_locale when a translation cannot be found).
   config.i18n.fallbacks = true
diff --git a/config/environments/test.rb b/config/environments/test.rb
index 4c8a0877..ea895b50 100644
--- a/config/environments/test.rb
+++ b/config/environments/test.rb
@@ -19,9 +19,7 @@
 
   # Configure public file server for tests with Cache-Control for performance.
   config.public_file_server.enabled = true
-  config.public_file_server.headers = {
-    "Cache-Control" => "public, max-age=#{1.hour.to_i}",
-  }
+  config.public_file_server.headers = { "Cache-Control" => "public, max-age=#{1.hour.to_i}" }
 
   # Show full error reports and disable caching.
   config.consider_all_requests_local = true
@@ -34,13 +32,6 @@
   # Disable request forgery protection in test environment.
   config.action_controller.allow_forgery_protection = false
 
-  config.action_mailer.perform_caching = false
-
-  # Tell Action Mailer not to deliver emails to the real world.
-  # The :test delivery method accumulates sent emails in the
-  # ActionMailer::Base.deliveries array.
-  config.action_mailer.delivery_method = :test
-
   # Print deprecation notices to the stderr.
   config.active_support.deprecation = :stderr
 
@@ -56,6 +47,6 @@
   # Annotate rendered view with file names.
   # config.action_view.annotate_rendered_view_with_filenames = true
 
-  # Raise error when a before_action's only/except options reference missing actions
+  # Raise error when a before_action's only/except options reference missing actions.
   config.action_controller.raise_on_missing_callback_actions = true
 end
diff --git a/config/initializers/new_framework_defaults_7_1.rb b/config/initializers/new_framework_defaults_7_1.rb
deleted file mode 100644
index e39bd17a..00000000
--- a/config/initializers/new_framework_defaults_7_1.rb
+++ /dev/null
@@ -1,279 +0,0 @@
-# Be sure to restart your server when you modify this file.
-#
-# This file eases your Rails 7.1 framework defaults upgrade.
-#
-# Uncomment each configuration one by one to switch to the new default.
-# Once your application is ready to run with all new defaults, you can remove
-# this file and set the `config.load_defaults` to `7.1`.
-#
-# Read the Guide for Upgrading Ruby on Rails for more info on each option.
-# https://guides.rubyonrails.org/upgrading_ruby_on_rails.html
-
-###
-# No longer add autoloaded paths into `$LOAD_PATH`. This means that you won't be able
-# to manually require files that are managed by the autoloader, which you shouldn't do anyway.
-#
-# This will reduce the size of the load path, making `require` faster if you don't use bootsnap, or reduce the size
-# of the bootsnap cache if you use it.
-#++
-# Rails.application.config.add_autoload_paths_to_load_path = false
-
-###
-# Remove the default X-Download-Options headers since it is used only by Internet Explorer.
-# If you need to support Internet Explorer, add back `"X-Download-Options" => "noopen"`.
-#++
-# Rails.application.config.action_dispatch.default_headers = {
-#   "X-Frame-Options" => "SAMEORIGIN",
-#   "X-XSS-Protection" => "0",
-#   "X-Content-Type-Options" => "nosniff",
-#   "X-Permitted-Cross-Domain-Policies" => "none",
-#   "Referrer-Policy" => "strict-origin-when-cross-origin"
-# }
-
-###
-# Do not treat an `ActionController::Parameters` instance
-# as equal to an equivalent `Hash` by default.
-#++
-# Rails.application.config.action_controller.allow_deprecated_parameters_hash_equality = false
-
-###
-# Active Record Encryption now uses SHA-256 as its hash digest algorithm.
-#
-# There are 3 scenarios to consider.
-#
-# 1. If you have data encrypted with previous Rails versions, and you have
-# +config.active_support.key_generator_hash_digest_class+ configured as SHA1 (the default
-# before Rails 7.0), you need to configure SHA-1 for Active Record Encryption too:
-#++
-# Rails.application.config.active_record.encryption.hash_digest_class = OpenSSL::Digest::SHA1
-#
-# 2. If you have +config.active_support.key_generator_hash_digest_class+ configured as SHA256 (the new default
-# in 7.0), then you need to configure SHA-256 for Active Record Encryption:
-#++
-# Rails.application.config.active_record.encryption.hash_digest_class = OpenSSL::Digest::SHA256
-#
-# 3. If you don't currently have data encrypted with Active Record encryption, you can disable this setting to
-# configure the default behavior starting 7.1+:
-#++
-# Rails.application.config.active_record.encryption.support_sha1_for_non_deterministic_encryption = false
-
-###
-# No longer run after_commit callbacks on the first of multiple Active Record
-# instances to save changes to the same database row within a transaction.
-# Instead, run these callbacks on the instance most likely to have internal
-# state which matches what was committed to the database, typically the last
-# instance to save.
-#++
-# Rails.application.config.active_record.run_commit_callbacks_on_first_saved_instances_in_transaction = false
-
-###
-# Configures SQLite with a strict strings mode, which disables double-quoted string literals.
-#
-# SQLite has some quirks around double-quoted string literals.
-# It first tries to consider double-quoted strings as identifier names, but if they don't exist
-# it then considers them as string literals. Because of this, typos can silently go unnoticed.
-# For example, it is possible to create an index for a non existing column.
-# See https://www.sqlite.org/quirks.html#double_quoted_string_literals_are_accepted for more details.
-#++
-# Rails.application.config.active_record.sqlite3_adapter_strict_strings_by_default = true
-
-###
-# Disable deprecated singular associations names.
-#++
-# Rails.application.config.active_record.allow_deprecated_singular_associations_name = false
-
-###
-# Enable the Active Job `BigDecimal` argument serializer, which guarantees
-# roundtripping. Without this serializer, some queue adapters may serialize
-# `BigDecimal` arguments as simple (non-roundtrippable) strings.
-#
-# When deploying an application with multiple replicas, old (pre-Rails 7.1)
-# replicas will not be able to deserialize `BigDecimal` arguments from this
-# serializer. Therefore, this setting should only be enabled after all replicas
-# have been successfully upgraded to Rails 7.1.
-#++
-# Rails.application.config.active_job.use_big_decimal_serializer = true
-
-###
-# Specify if an `ArgumentError` should be raised if `Rails.cache` `fetch` or
-# `write` are given an invalid `expires_at` or `expires_in` time.
-# Options are `true`, and `false`. If `false`, the exception will be reported
-# as `handled` and logged instead.
-#++
-# Rails.application.config.active_support.raise_on_invalid_cache_expiration_time = true
-
-###
-# Specify whether Query Logs will format tags using the SQLCommenter format
-# (https://open-telemetry.github.io/opentelemetry-sqlcommenter/), or using the legacy format.
-# Options are `:legacy` and `:sqlcommenter`.
-#++
-# Rails.application.config.active_record.query_log_tags_format = :sqlcommenter
-
-###
-# Specify the default serializer used by `MessageEncryptor` and `MessageVerifier`
-# instances.
-#
-# The legacy default is `:marshal`, which is a potential vector for
-# deserialization attacks in cases where a message signing secret has been
-# leaked.
-#
-# In Rails 7.1, the new default is `:json_allow_marshal` which serializes and
-# deserializes with `ActiveSupport::JSON`, but can fall back to deserializing
-# with `Marshal` so that legacy messages can still be read.
-#
-# In Rails 7.2, the default will become `:json` which serializes and
-# deserializes with `ActiveSupport::JSON` only.
-#
-# Alternatively, you can choose `:message_pack` or `:message_pack_allow_marshal`,
-# which serialize with `ActiveSupport::MessagePack`. `ActiveSupport::MessagePack`
-# can roundtrip some Ruby types that are not supported by JSON, and may provide
-# improved performance, but it requires the `msgpack` gem.
-#
-# For more information, see
-# https://guides.rubyonrails.org/v7.1/configuring.html#config-active-support-message-serializer
-#
-# If you are performing a rolling deploy of a Rails 7.1 upgrade, wherein servers
-# that have not yet been upgraded must be able to read messages from upgraded
-# servers, first deploy without changing the serializer, then set the serializer
-# in a subsequent deploy.
-#++
-# Rails.application.config.active_support.message_serializer = :json_allow_marshal
-
-###
-# Enable a performance optimization that serializes message data and metadata
-# together. This changes the message format, so messages serialized this way
-# cannot be read by older versions of Rails. However, messages that use the old
-# format can still be read, regardless of whether this optimization is enabled.
-#
-# To perform a rolling deploy of a Rails 7.1 upgrade, wherein servers that have
-# not yet been upgraded must be able to read messages from upgraded servers,
-# leave this optimization off on the first deploy, then enable it on a
-# subsequent deploy.
-#++
-# Rails.application.config.active_support.use_message_serializer_for_metadata = true
-
-###
-# Set the maximum size for Rails log files.
-#
-# `config.load_defaults 7.1` does not set this value for environments other than
-# development and test.
-#++
-# if Rails.env.local?
-#   Rails.application.config.log_file_size = 100 * 1024 * 1024
-# end
-
-###
-# Enable raising on assignment to attr_readonly attributes. The previous
-# behavior would allow assignment but silently not persist changes to the
-# database.
-#++
-# Rails.application.config.active_record.raise_on_assign_to_attr_readonly = true
-
-###
-# Enable validating only parent-related columns for presence when the parent is mandatory.
-# The previous behavior was to validate the presence of the parent record, which performed an extra query
-# to get the parent every time the child record was updated, even when parent has not changed.
-#++
-# Rails.application.config.active_record.belongs_to_required_validates_foreign_key = false
-
-###
-# Enable precompilation of `config.filter_parameters`. Precompilation can
-# improve filtering performance, depending on the quantity and types of filters.
-#++
-# Rails.application.config.precompile_filter_parameters = true
-
-###
-# Enable before_committed! callbacks on all enrolled records in a transaction.
-# The previous behavior was to only run the callbacks on the first copy of a record
-# if there were multiple copies of the same record enrolled in the transaction.
-#++
-# Rails.application.config.active_record.before_committed_on_all_records = true
-
-###
-# Disable automatic column serialization into YAML.
-# To keep the historic behavior, you can set it to `YAML`, however it is
-# recommended to explicitly define the serialization method for each column
-# rather than to rely on a global default.
-#++
-# Rails.application.config.active_record.default_column_serializer = nil
-
-###
-# Enable a performance optimization that serializes Active Record models
-# in a faster and more compact way.
-#
-# To perform a rolling deploy of a Rails 7.1 upgrade, wherein servers that have
-# not yet been upgraded must be able to read caches from upgraded servers,
-# leave this optimization off on the first deploy, then enable it on a
-# subsequent deploy.
-#++
-# Rails.application.config.active_record.marshalling_format_version = 7.1
-
-###
-# Run `after_commit` and `after_*_commit` callbacks in the order they are defined in a model.
-# This matches the behaviour of all other callbacks.
-# In previous versions of Rails, they ran in the inverse order.
-#++
-# Rails.application.config.active_record.run_after_transaction_callbacks_in_order_defined = true
-
-###
-# Whether a `transaction` block is committed or rolled back when exited via `return`, `break` or `throw`.
-#++
-# Rails.application.config.active_record.commit_transaction_on_non_local_return = true
-
-###
-# Controls when to generate a value for <tt>has_secure_token</tt> declarations.
-#++
-# Rails.application.config.active_record.generate_secure_token_on = :initialize
-
-###
-# ** Please read carefully, this must be configured in config/application.rb **
-#
-# Change the format of the cache entry.
-#
-# Changing this default means that all new cache entries added to the cache
-# will have a different format that is not supported by Rails 7.0
-# applications.
-#
-# Only change this value after your application is fully deployed to Rails 7.1
-# and you have no plans to rollback.
-# When you're ready to change format, add this to `config/application.rb` (NOT
-# this file):
-#   config.active_support.cache_format_version = 7.1
-
-###
-# Configure Action View to use HTML5 standards-compliant sanitizers when they are supported on your
-# platform.
-#
-# `Rails::HTML::Sanitizer.best_supported_vendor` will cause Action View to use HTML5-compliant
-# sanitizers if they are supported, else fall back to HTML4 sanitizers.
-#
-# In previous versions of Rails, Action View always used `Rails::HTML4::Sanitizer` as its vendor.
-#++
-# Rails.application.config.action_view.sanitizer_vendor = Rails::HTML::Sanitizer.best_supported_vendor
-
-###
-# Configure Action Text to use an HTML5 standards-compliant sanitizer when it is supported on your
-# platform.
-#
-# `Rails::HTML::Sanitizer.best_supported_vendor` will cause Action Text to use HTML5-compliant
-# sanitizers if they are supported, else fall back to HTML4 sanitizers.
-#
-# In previous versions of Rails, Action Text always used `Rails::HTML4::Sanitizer` as its vendor.
-#++
-# Rails.application.config.action_text.sanitizer_vendor = Rails::HTML::Sanitizer.best_supported_vendor
-
-###
-# Configure the log level used by the DebugExceptions middleware when logging
-# uncaught exceptions during requests.
-#++
-# Rails.application.config.action_dispatch.debug_exception_log_level = :error
-
-###
-# Configure the test helpers in Action View, Action Dispatch, and rails-dom-testing to use HTML5
-# parsers.
-#
-# Nokogiri::HTML5 isn't supported on JRuby, so JRuby applications must set this to :html4.
-#
-# In previous versions of Rails, these test helpers always used an HTML4 parser.
-#++
-# Rails.application.config.dom_testing_default_html_version = :html5