diff --git a/app/assets/javascripts/subdivision_select.js b/app/assets/javascripts/subdivision_select.js
index 0ada31b..9f07031 100644
--- a/app/assets/javascripts/subdivision_select.js
+++ b/app/assets/javascripts/subdivision_select.js
@@ -13,7 +13,7 @@ var SubdivisionSelect = (function() {
     } else {
       this._countrySelect = $element.
         closest("form").
-        find(SubdivisionSelect.subdivisionSelector);
+        find(SubdivisionSelect.countrySelector);
     }
   };
 
diff --git a/app/helpers/subdivision_select/subdivisions_helper.rb b/app/helpers/subdivision_select/subdivisions_helper.rb
index 61a9998..ff97b2e 100644
--- a/app/helpers/subdivision_select/subdivisions_helper.rb
+++ b/app/helpers/subdivision_select/subdivisions_helper.rb
@@ -6,11 +6,18 @@ def self.get_subdivisions(alpha2)
       # and the value is a hash with two key/values:
       # - "name" is the most popular/most correct name
       # - "names" is an array of all the names
-      if ISO3166::Country[alpha2].nil?
-        {}
-      else
-        ISO3166::Country[alpha2].subdivisions.map { |k, v| [k, v["name"]] }.to_h
-      end
+      subdivision_hash =
+        if ISO3166::Country[alpha2].nil?
+          {}
+        else
+          ISO3166::Country[alpha2].subdivisions.map { |k, v| [k, v["name"]] }.to_h
+        end
+
+      Hash[
+        SubdivisionSelect.options.priority_subdivisions.fetch(alpha2&.to_sym, []).map do |sd_code|
+          [sd_code, subdivision_hash.delete(sd_code)]
+        end
+      ].merge(subdivision_hash)
     end
 
     def self.get_subdivisions_for_select(alpha2)
diff --git a/lib/subdivision_select.rb b/lib/subdivision_select.rb
index a78cea6..4aefb81 100644
--- a/lib/subdivision_select.rb
+++ b/lib/subdivision_select.rb
@@ -1,3 +1,4 @@
+require "subdivision_select/configuration"
 require "subdivision_select/tag_helper"
 require "subdivision_select/subdivision_select_helper"
 require "subdivision_select/engine"
diff --git a/lib/subdivision_select/configuration.rb b/lib/subdivision_select/configuration.rb
new file mode 100644
index 0000000..d2d46e4
--- /dev/null
+++ b/lib/subdivision_select/configuration.rb
@@ -0,0 +1,17 @@
+module SubdivisionSelect
+  def self.configure
+    yield(options)
+  end
+
+  def self.options
+    @options ||= Configuration.new
+  end
+
+  class Configuration
+    attr_accessor :priority_subdivisions
+
+    def initialize
+      @priority_subdivisions = {}
+    end
+  end
+end
diff --git a/lib/subdivision_select/engine.rb b/lib/subdivision_select/engine.rb
index 2fb6506..b0a5ca6 100644
--- a/lib/subdivision_select/engine.rb
+++ b/lib/subdivision_select/engine.rb
@@ -13,7 +13,7 @@ class Engine < ::Rails::Engine
 
     config.generators do |g|
       g.test_framework :rspec
-      g.fixture_replacement :factory_girl, dir: "spec/factories"
+      g.fixture_replacement :factory_bot, dir: "spec/factories"
     end
   end
 end
diff --git a/lib/subdivision_select/tag_helper.rb b/lib/subdivision_select/tag_helper.rb
index 3fec4fd..110f99f 100644
--- a/lib/subdivision_select/tag_helper.rb
+++ b/lib/subdivision_select/tag_helper.rb
@@ -1,15 +1,20 @@
 module SubdivisionSelect
-  #class CountryNotFoundError < StandardError;end
+  # class CountryNotFoundError < StandardError;end
   module TagHelper
+    unless respond_to?(:options_for_select)
+      include ActionView::Helpers::FormOptionsHelper
+      include ActionView::Helpers::Tags::SelectRenderer if defined?(ActionView::Helpers::Tags::SelectRenderer)
+    end
+
     def subdivision_option_tags
       option_tags_options = {
-        selected: @options.fetch(:selected) { value(@object) },
+        selected: @options.fetch(:selected) { value },
         disabled: @options[:disabled]
       }
 
       # Actual loading of subdivisions is in a View helper, since the controller
       # needs to use it, to render the subdivisions of a country in JSON
-      subdivisions = SubdivisionsHelper::get_subdivisions_for_select(country)
+      subdivisions = SubdivisionsHelper.get_subdivisions_for_select(country)
       options_for_select(subdivisions, option_tags_options)
     end
 
@@ -20,4 +25,3 @@ def country
     end
   end
 end
-
diff --git a/lib/subdivision_select/version.rb b/lib/subdivision_select/version.rb
index 70dc584..2a98396 100644
--- a/lib/subdivision_select/version.rb
+++ b/lib/subdivision_select/version.rb
@@ -1,3 +1,3 @@
 module SubdivisionSelect
-  VERSION = "0.0.6"
+  VERSION = "0.0.8"
 end
diff --git a/spec/controllers/subdivision_select/subdivisions_controller_spec.rb b/spec/controllers/subdivision_select/subdivisions_controller_spec.rb
index f37c8e2..961c2bc 100644
--- a/spec/controllers/subdivision_select/subdivisions_controller_spec.rb
+++ b/spec/controllers/subdivision_select/subdivisions_controller_spec.rb
@@ -6,17 +6,16 @@ module SubdivisionSelect
 
     describe "GET #get" do
       it "returns http success in JSON, when correct param supplied" do
-        get :get, country_code: "IE"
-        expect(response).to have_http_status(:success)
-        expect(response.content_type).to eq("application/json")
+        get :get, params: {country_code: "IE"}
+        expect(response).to be_successful
+        expect(response.content_type).to eq("application/json; charset=utf-8")
       end
 
       it "returns http success in JSON, w/o correct param supplied" do
         get :get
-        expect(response).to have_http_status(:success)
-        expect(response.content_type).to eq("application/json")
+        expect(response).to be_successful
+        expect(response.content_type).to eq("application/json; charset=utf-8")
       end
-
     end
   end
 end
diff --git a/spec/dummy/app/assets/config/manifest.js b/spec/dummy/app/assets/config/manifest.js
new file mode 100644
index 0000000..b16e53d
--- /dev/null
+++ b/spec/dummy/app/assets/config/manifest.js
@@ -0,0 +1,3 @@
+//= link_tree ../images
+//= link_directory ../javascripts .js
+//= link_directory ../stylesheets .css
diff --git a/spec/dummy/app/controllers/addresses_demo_controller.rb b/spec/dummy/app/controllers/addresses_demo_controller.rb
index 1310c37..5f75316 100644
--- a/spec/dummy/app/controllers/addresses_demo_controller.rb
+++ b/spec/dummy/app/controllers/addresses_demo_controller.rb
@@ -13,7 +13,7 @@ def tags
   def update
     @address = Address.find(params[:id])
 
-    if @address.update_attributes(address_params)
+    if @address.update(address_params)
       redirect_to root_path, notice: "Updated address!"
     end
   end
diff --git a/spec/dummy/db/migrate/20150505182454_add_title_to_addresses.rb b/spec/dummy/db/migrate/20150505182454_add_title_to_addresses.rb
deleted file mode 100644
index 5375a60..0000000
--- a/spec/dummy/db/migrate/20150505182454_add_title_to_addresses.rb
+++ /dev/null
@@ -1,5 +0,0 @@
-class AddTitleToAddresses < ActiveRecord::Migration
-  def change
-    add_column :addresses, :title, :string
-  end
-end
diff --git a/spec/dummy/db/migrate/20150505181543_create_addresses.rb b/spec/dummy/db/migrate/20241004213846_create_addresses.rb
similarity index 55%
rename from spec/dummy/db/migrate/20150505181543_create_addresses.rb
rename to spec/dummy/db/migrate/20241004213846_create_addresses.rb
index d029d09..488667f 100644
--- a/spec/dummy/db/migrate/20150505181543_create_addresses.rb
+++ b/spec/dummy/db/migrate/20241004213846_create_addresses.rb
@@ -1,10 +1,11 @@
-class CreateAddresses < ActiveRecord::Migration
+class CreateAddresses < ActiveRecord::Migration[7.2]
   def change
     create_table :addresses do |t|
+      t.string :title
       t.string :country
       t.string :subdivision
 
-      t.timestamps null: false
+      t.timestamps
     end
   end
 end
diff --git a/spec/dummy/db/schema.rb b/spec/dummy/db/schema.rb
index 688f6d5..5052a55 100644
--- a/spec/dummy/db/schema.rb
+++ b/spec/dummy/db/schema.rb
@@ -1,24 +1,21 @@
-# encoding: UTF-8
 # This file is auto-generated from the current state of the database. Instead
 # of editing this file, please use the migrations feature of Active Record to
 # incrementally modify your database, and then regenerate this schema definition.
 #
-# Note that this schema.rb definition is the authoritative source for your
-# database schema. If you need to create the application database on another
-# system, you should be using db:schema:load, not running all the migrations
-# from scratch. The latter is a flawed and unsustainable approach (the more migrations
-# you'll amass, the slower it'll run and the greater likelihood for issues).
+# This file is the source Rails uses to define your schema when running `bin/rails
+# db:schema:load`. When creating a new database, `bin/rails db:schema:load` tends to
+# be faster and is potentially less error prone than running all of your
+# migrations from scratch. Old migrations may fail to apply correctly if those
+# migrations use external dependencies or application code.
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20150505182454) do
-
+ActiveRecord::Schema[7.2].define(version: 2024_10_04_213846) do
   create_table "addresses", force: :cascade do |t|
-    t.string   "country"
-    t.string   "subdivision"
-    t.datetime "created_at",  null: false
-    t.datetime "updated_at",  null: false
-    t.string   "title"
+    t.string "title"
+    t.string "country"
+    t.string "subdivision"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
   end
-
 end
diff --git a/spec/dummy/db/seeds.rb b/spec/dummy/db/seeds.rb
deleted file mode 100644
index 0490917..0000000
--- a/spec/dummy/db/seeds.rb
+++ /dev/null
@@ -1,16 +0,0 @@
-Address.destroy_all
-
-Address.create!(
-  title: "Empty"
-)
-
-Address.create!(
-  title: "Massachusetts, USA",
-  country: "US",
-  subdivision: "MA"
-)
-
-Address.create!(
-  title: "Ireland, without subdivision",
-  country: "IE"
-)
diff --git a/spec/dummy/db/test.sqlite3-shm b/spec/dummy/db/test.sqlite3-shm
new file mode 100644
index 0000000..a19b7dd
Binary files /dev/null and b/spec/dummy/db/test.sqlite3-shm differ
diff --git a/spec/dummy/db/test.sqlite3-wal b/spec/dummy/db/test.sqlite3-wal
new file mode 100644
index 0000000..60ea8cb
Binary files /dev/null and b/spec/dummy/db/test.sqlite3-wal differ
diff --git a/spec/dummy/spec/controllers/addresses_demo_controller_spec.rb b/spec/dummy/spec/controllers/addresses_demo_controller_spec.rb
index a672b42..a1bd70d 100644
--- a/spec/dummy/spec/controllers/addresses_demo_controller_spec.rb
+++ b/spec/dummy/spec/controllers/addresses_demo_controller_spec.rb
@@ -4,21 +4,21 @@
   describe "GET #index" do
     it "returns http success" do
       get :index
-      expect(response).to have_http_status(:success)
+      expect(response).to be_successful
     end
   end
 
   describe "GET #tags" do
     it "returns http success" do
       get :tags
-      expect(response).to have_http_status(:success)
+      expect(response).to be_successful
     end
   end
 
   describe "PATCH #update" do
     it "returns http success" do
       @address = create(:address)
-      patch :update, id: @address.id, address: { subdivision: "D", country: "IE" }
+      patch :update, params: { id: @address.id, address: { subdivision: "D", country: "IE" } }
       expect(assigns(:address).country).to eq("IE")
       expect(assigns(:address).subdivision).to eq("D")
     end
diff --git a/spec/dummy/spec/features/select_boxes_spec.rb b/spec/dummy/spec/features/select_boxes_spec.rb
index a272264..da1bd40 100644
--- a/spec/dummy/spec/features/select_boxes_spec.rb
+++ b/spec/dummy/spec/features/select_boxes_spec.rb
@@ -1,4 +1,5 @@
 require "rails_helper"
+
 feature "select boxes via FormBuilder and FormTagHelper" do
   before(:each) do
     @address = create(:mass_address)
diff --git a/spec/factories.rb b/spec/factories.rb
index 4faac53..d5b3ebc 100644
--- a/spec/factories.rb
+++ b/spec/factories.rb
@@ -1,11 +1,11 @@
-FactoryGirl.define do
+FactoryBot.define do
   factory :address do
-    title "Blank Address"
+    title { "Blank Address" }
 
     factory :mass_address do
-      title "Massachusetts Address"
-      country "US"
-      subdivision "MA"
+      title { "Massachusetts Address" }
+      country { "US" }
+      subdivision { "MA" }
     end
   end
 end
diff --git a/spec/rails_helper.rb b/spec/rails_helper.rb
index bbadd22..4ee32fd 100644
--- a/spec/rails_helper.rb
+++ b/spec/rails_helper.rb
@@ -5,7 +5,9 @@
 require "rspec/rails"
 require "capybara/rails"
 require "capybara/rspec"
-require "factory_girl_rails"
+require "factory_bot_rails"
+require "rails-controller-testing"
+Rails::Controller::Testing.install
 
 require "capybara/poltergeist"
 Capybara.javascript_driver = :poltergeist
@@ -52,5 +54,5 @@
   # https://relishapp.com/rspec/rspec-rails/docs
   config.infer_spec_type_from_file_location!
 
-  config.include FactoryGirl::Syntax::Methods
+  config.include FactoryBot::Syntax::Methods
 end
diff --git a/subdivision_select.gemspec b/subdivision_select.gemspec
index 713d6a5..c8a0770 100644
--- a/subdivision_select.gemspec
+++ b/subdivision_select.gemspec
@@ -19,19 +19,21 @@ Gem::Specification.new do |s|
     "Rakefile",
     "README.rdoc"
   ]
-  s.test_files = Dir["spec/**/*"]
 
-  s.add_dependency "rails", ">= 4.1"
-  s.add_dependency "country_select", "~> 2.0"
-  s.add_dependency "countries", "~> 1.1"
+  s.add_dependency "rails", ">= 7.0"
+  s.add_dependency "sprockets-rails", ">= 3.5"
+  s.add_dependency "country_select", "~> 10.0.0"
+  s.add_dependency "countries", "> 5.0", "< 8.0"
   s.add_dependency "jquery-rails", ">= 3.0"
 
   s.add_development_dependency "sqlite3", "~> 1.3" # Not used but we need an AR adapter
 
-  s.add_development_dependency "rspec-rails", "~> 3.2"
-  s.add_development_dependency "factory_girl_rails", "~> 4.5"
+  s.add_development_dependency "puma", ">= 6.0"
+  s.add_development_dependency "rspec-rails", "~> 7.0"
+  s.add_development_dependency "rails-controller-testing"
+  s.add_development_dependency "factory_bot_rails", "~> 6.0"
   s.add_development_dependency "database_cleaner"
 
-  s.add_development_dependency "capybara", "~> 2.4"
+  s.add_development_dependency "capybara", "~> 3.40"
   s.add_development_dependency "poltergeist", "~> 1.8"
 end