diff --git a/.rubocop.yml b/.rubocop.yml
index 74285f4..859f2b7 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,5 +1,5 @@
 AllCops:
-  TargetRubyVersion: 2.3
+  TargetRubyVersion: 2.7
   # RuboCop has a bunch of cops enabled by default. This setting tells RuboCop
   # to ignore them, so only the ones explicitly set in this file are enabled.
   DisabledByDefault: true
@@ -11,17 +11,15 @@ AllCops:
     - 'db/**/*'
     - 'config/**/*'
     - 'vendor/**/*'
+    - 'test/**/*'
+    - 'bin/**/*'
+    - 'Rakefile'
+  NewCops: enable
 
 # Prefer &&/|| over and/or.
 Style/AndOr:
   Enabled: true
 
-# Do not use braces for hash literals when they are the last argument of a
-# method call.
-Style/BracesAroundHashParameters:
-  Enabled: true
-  EnforcedStyle: context_dependent
-
 # Align `when` with `case`.
 Layout/CaseIndentation:
   Enabled: true
@@ -59,7 +57,6 @@ Style/HashSyntax:
 # extra level of indentation.
 Layout/IndentationConsistency:
   Enabled: true
-  EnforcedStyle: rails
 
 # Two spaces, no tabs (for indentation).
 Layout/IndentationWidth:
@@ -109,14 +106,13 @@ Layout/SpaceInsideParens:
 # Check quotes usage according to lint rule below.
 Style/StringLiterals:
   Enabled: true
-  EnforcedStyle: double_quotes
 
 # Detect hard tabs, no hard tabs.
-Layout/Tab:
+Layout/IndentationStyle:
   Enabled: true
 
 # Blank lines should not have any spaces.
-Layout/TrailingBlankLines:
+Layout/TrailingEmptyLines:
   Enabled: true
 
 # No trailing whitespace.
@@ -124,7 +120,7 @@ Layout/TrailingWhitespace:
   Enabled: true
 
 # Use quotes for string literals when they are enough.
-Style/UnneededPercentQ:
+Style/RedundantPercentQ:
   Enabled: true
 
 # Align `end` with the matching keyword or starting expression except for
@@ -144,6 +140,8 @@ Metrics/LineLength:
 # Prefer the compact readable style
 Style/ClassAndModuleChildren:
   EnforcedStyle: compact
+  Exclude:
+    - 'lib/generators/abraham/install_generator.rb'
 
 Style/FormatStringToken:
   EnforcedStyle: template
diff --git a/.ruby-version b/.ruby-version
index aedc15b..2c9b4ef 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.5.3
+2.7.3
diff --git a/Gemfile b/Gemfile
index 43849c9..6615044 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,9 +1,6 @@
 # frozen_string_literal: true
-source 'http://rubygems.org'
 
-group :development, :test do
-  gem 'sassc-rails'
-end
+source 'http://rubygems.org'
 
 # Set the Rails version. We have this switch so that we can test multiple
 # versions for Rails on Travis CI.
@@ -13,7 +10,7 @@ rails = case rails_version
         when 'default'
           '~> 5.2'
         when 'master'
-          {github: 'rails/rails'}
+          { github: 'rails/rails' }
         else
           "~> #{rails_version}"
         end
diff --git a/README.md b/README.md
index 0b395e2..06bc83e 100644
--- a/README.md
+++ b/README.md
@@ -42,6 +42,12 @@ Install the JavaScript dependencies:
 $ yarn add js-cookie@^2.2.0 shepherd.js@^6.0.0-beta
 ```
 
+Mount the engine in `config/routes.rb`. It is important to mount Abraham as `abraham`, since the inserted `abraham_tour` partial (below) leverages an isolated named route.
+
+```
+mount Abraham::Engine, at: 'abraham'
+```
+
 Require `abraham` in `app/assets/javascripts/application.js`
 
 ```
@@ -68,10 +74,13 @@ defaults: &defaults
 
 You can also [write your own Shepherd theme](https://shepherdjs.dev/docs/tutorial-03-styling.html) based on Shepherd's [default CSS](https://github.com/shipshapecode/shepherd/releases/download/v6.0.0-beta.1/shepherd.css).
 
-Tell Abraham where to insert its generated JavaScript in `app/views/layouts/application.html.erb`, just before the closing `body` tag:
+Tell Abraham where to insert the JavaScript partial. This partial sets up the [Shepherd JS](https://shepherdjs.dev/) tour/s.
+
+Generally it is inserted in `app/views/layouts/application.html.erb`, just before the closing `body` tag:
 
 ```erb
 <%= abraham_tour %>
+
 </body>
 </html>
 ```
@@ -250,7 +259,12 @@ Use `bundle info [gemname]` to see where a bundled gem is installed.
 
 #### Testing locally
 
-This Rails engine contains a test app called `dummy` with controller and system tests. They'll all get run with `rails t`.
+This Rails engine contains a test app called `dummy` with controller and system tests. You can run tests by:
+
+```
+~ rake app:assets:precompile
+~ rails test
+```
 
 Please note that if you change anything in the `lib/generators` folder (i.e. configuration, intializer, migration) you'll need to migrate the `dummy` app accordingly.
 
diff --git a/abraham.gemspec b/abraham.gemspec
index 65c6fb8..295f6f8 100644
--- a/abraham.gemspec
+++ b/abraham.gemspec
@@ -1,22 +1,22 @@
 # frozen_string_literal: true
 
-$LOAD_PATH.push File.expand_path("lib", __dir__)
+$LOAD_PATH.push File.expand_path('lib', __dir__)
 
 # Maintain your gem's version:
-require "abraham/version"
+require 'abraham/version'
 
 # Describe your gem and declare its dependencies:
 Gem::Specification.new do |s|
-  s.name        = "abraham"
+  s.name        = 'abraham'
   s.version     = Abraham::VERSION
-  s.authors     = ["Jonathan Abbett"]
-  s.email       = ["jonathan@act.md"]
-  s.homepage    = "https://github.com/actmd/abraham"
-  s.summary     = "Trackable application tours for Rails with i18n support, based on Shepherd.js."
-  s.description = "Trackable application tours for Rails with i18n support, based on Shepherd.js."
-  s.license     = "MIT"
+  s.authors     = ['Jonathan Abbett']
+  s.email       = ['jonathan@act.md']
+  s.homepage    = 'https://github.com/actmd/abraham'
+  s.summary     = 'Trackable application tours for Rails with i18n support, based on Shepherd.js.'
+  s.description = 'Trackable application tours for Rails with i18n support, based on Shepherd.js.'
+  s.license     = 'MIT'
 
-  s.files = Dir["{app,config,db,lib}/**/*", "MIT-LICENSE", "Rakefile", "README.md"]
+  s.files = Dir['{app,config,db,lib}/**/*', 'MIT-LICENSE', 'Rakefile', 'README.md']
 
   s.add_development_dependency 'sassc-rails'
   s.add_development_dependency 'sqlite3'
diff --git a/app/controllers/abraham/histories_controller.rb b/app/controllers/abraham/histories_controller.rb
new file mode 100644
index 0000000..03ab033
--- /dev/null
+++ b/app/controllers/abraham/histories_controller.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+class Abraham::HistoriesController < ApplicationController
+  def create
+    abraham_history = Abraham::History.new(abraham_history_params).tap do |history|
+      history.creator_id = current_user.id
+    end
+
+    respond_to do |format|
+      if abraham_history.save
+        format.json { render json: abraham_history, status: :created }
+      else
+        format.json { render json: abraham_history.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  private
+
+  def abraham_history_params
+    params.require(:history).permit(:controller_name, :action_name, :tour_name)
+  end
+end
diff --git a/app/controllers/abraham_histories_controller.rb b/app/controllers/abraham_histories_controller.rb
deleted file mode 100644
index 0b76042..0000000
--- a/app/controllers/abraham_histories_controller.rb
+++ /dev/null
@@ -1,21 +0,0 @@
-# frozen_string_literal: true
-
-class AbrahamHistoriesController < ApplicationController
-  def create
-    @abraham_history = AbrahamHistory.new(abraham_history_params)
-    @abraham_history.creator_id = current_user.id
-    respond_to do |format|
-      if @abraham_history.save
-        format.json { render json: @abraham_history, status: :created }
-      else
-        format.json { render json: @abraham_history.errors, status: :unprocessable_entity }
-      end
-    end
-  end
-
-  private
-
-    def abraham_history_params
-      params.require(:abraham_history).permit(:controller_name, :action_name, :tour_name)
-    end
-end
diff --git a/app/helpers/abraham_helper.rb b/app/helpers/abraham_helper.rb
index 7d4db7b..583c3d3 100644
--- a/app/helpers/abraham_helper.rb
+++ b/app/helpers/abraham_helper.rb
@@ -9,7 +9,7 @@ def abraham_tour
 
     if tours
       # Have any automatic tours been completed already?
-      completed = AbrahamHistory.where(
+      completed = Abraham::History.where(
         creator_id: current_user.id,
         controller_name: controller_path,
         action_name: action_name
@@ -21,11 +21,11 @@ def abraham_tour
       tour_html = ''
 
       tour_keys.each do |key|
-        tour_html += render(partial: "application/abraham",
-               locals: { tour_name: key,
-                         tour_completed: tour_keys_completed.include?(key),
-                         trigger: tours[key]["trigger"],
-                         steps: tours[key]["steps"] })
+        tour_html += render(partial: 'application/abraham',
+                            locals: { tour_name: key,
+                                      tour_completed: tour_keys_completed.include?(key),
+                                      trigger: tours[key]['trigger'],
+                                      steps: tours[key]['steps'] })
       end
 
       tour_html.html_safe
diff --git a/app/models/application_record.rb b/app/models/abraham/application_record.rb
similarity index 54%
rename from app/models/application_record.rb
rename to app/models/abraham/application_record.rb
index 71fbba5..73ce7e1 100644
--- a/app/models/application_record.rb
+++ b/app/models/abraham/application_record.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
-class ApplicationRecord < ActiveRecord::Base
+class Abraham::ApplicationRecord < ActiveRecord::Base
   self.abstract_class = true
 end
diff --git a/app/models/abraham/history.rb b/app/models/abraham/history.rb
new file mode 100644
index 0000000..593bc44
--- /dev/null
+++ b/app/models/abraham/history.rb
@@ -0,0 +1,4 @@
+# frozen_string_literal: true
+
+class Abraham::History < ApplicationRecord
+end
diff --git a/app/models/abraham_history.rb b/app/models/abraham_history.rb
deleted file mode 100644
index b400a14..0000000
--- a/app/models/abraham_history.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-# frozen_string_literal: true
-
-class AbrahamHistory < ActiveRecord::Base
-end
diff --git a/app/views/application/_abraham.html.erb b/app/views/application/_abraham.html.erb
index 51d24b4..937be2d 100644
--- a/app/views/application/_abraham.html.erb
+++ b/app/views/application/_abraham.html.erb
@@ -4,7 +4,7 @@
   <% if trigger != 'manual' %>
   Abraham.tours["<%= tour_name %>"].on("complete", function() {
     // Make AJAX call to save history of tour completion
-    return fetch("/abraham_histories/", {
+    return fetch('<%= abraham.histories_path %>', {
       method: "POST",
       headers: { 'Content-Type': 'application/json' },
       body: JSON.stringify({
diff --git a/config/routes.rb b/config/routes.rb
index bda83df..5cf0bcd 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
-Rails.application.routes.draw do
-  resources :abraham_histories, only: :create
+Abraham::Engine.routes.draw do
+  resources :histories, only: :create
 end
diff --git a/lib/abraham.rb b/lib/abraham.rb
index d413b79..11084d5 100644
--- a/lib/abraham.rb
+++ b/lib/abraham.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-require "abraham/engine"
+require 'abraham/engine'
 
 module Abraham
 end
diff --git a/lib/abraham/engine.rb b/lib/abraham/engine.rb
index 9234726..5cd06d3 100644
--- a/lib/abraham/engine.rb
+++ b/lib/abraham/engine.rb
@@ -1,8 +1,9 @@
 # frozen_string_literal: true
 
-require "rubygems"
+class Abraham::Engine < ::Rails::Engine
+  isolate_namespace Abraham
 
-module Abraham
-  class Engine < ::Rails::Engine
+  ActiveSupport.on_load(:action_controller_base) do
+    helper AbrahamHelper
   end
 end
diff --git a/lib/abraham/version.rb b/lib/abraham/version.rb
index e3afab7..47e9f50 100644
--- a/lib/abraham/version.rb
+++ b/lib/abraham/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Abraham
-  VERSION = "2.4.0"
+  VERSION = '2.4.0'
 end
diff --git a/lib/generators/abraham/install_generator.rb b/lib/generators/abraham/install_generator.rb
index 03ee440..f97cd3c 100644
--- a/lib/generators/abraham/install_generator.rb
+++ b/lib/generators/abraham/install_generator.rb
@@ -1,36 +1,36 @@
 # frozen_string_literal: true
 
-require "rails/generators"
-require "rails/generators/active_record"
+require 'rails/generators'
+require 'rails/generators/active_record'
 
 module Abraham
   module Generators
     class InstallGenerator < ActiveRecord::Generators::Base
-      argument :name, type: :string, default: "random_name"
+      argument :name, type: :string, default: 'random_name'
 
       class_option :'skip-migration', type: :boolean, desc: "Don't generate a migration for the histories table"
       class_option :'skip-initializer', type: :boolean, desc: "Don't generate an initializer"
       class_option :'skip-config', type: :boolean, desc: "Don't generate a config file"
 
-      source_root File.expand_path(File.join(File.dirname(__FILE__), "templates"))
+      source_root File.expand_path(File.join(File.dirname(__FILE__), 'templates'))
 
       # Copies the migration template to db/migrate.
       def copy_files
-        return if options["skip-migration"]
+        return if options['skip-migration']
 
-        migration_template "migration.rb", "db/migrate/create_abraham_histories.rb"
+        migration_template 'migration.rb', 'db/migrate/create_abraham_histories.rb'
       end
 
       def create_initializer
-        return if options["skip-initializer"]
+        return if options['skip-initializer']
 
-        copy_file "initializer.rb", "config/initializers/abraham.rb"
+        copy_file 'initializer.rb', 'config/initializers/abraham.rb'
       end
 
       def create_config
-        return if options["skip-config"]
+        return if options['skip-config']
 
-        copy_file "abraham.yml", "config/abraham.yml"
+        copy_file 'abraham.yml', 'config/abraham.yml'
       end
     end
   end
diff --git a/test/dummy/config/routes.rb b/test/dummy/config/routes.rb
index cebcb7a..6c8664a 100644
--- a/test/dummy/config/routes.rb
+++ b/test/dummy/config/routes.rb
@@ -10,5 +10,7 @@
     get "dashboard/home"
   end
 
+  mount Abraham::Engine, at: 'abraham'
+
   # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
 end
diff --git a/test/dummy/test/controllers/abraham/histories_controller_test.rb b/test/dummy/test/controllers/abraham/histories_controller_test.rb
new file mode 100644
index 0000000..71ae857
--- /dev/null
+++ b/test/dummy/test/controllers/abraham/histories_controller_test.rb
@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+require 'test_helper'
+
+module Abraham
+  class HistoriesControllerTest < ActionDispatch::IntegrationTest
+    test 'creates Abraham::History' do
+      assert_difference ['Abraham::History.count'] do
+        post abraham.histories_url, as: :json, params: { history: { action_name: 'foo', controller_name: 'bar', tour_name: 'baz' } }
+      end
+    end
+  end
+end
diff --git a/test/dummy/test/controllers/abraham_histories_controller_test.rb b/test/dummy/test/controllers/abraham_histories_controller_test.rb
deleted file mode 100644
index 1b1b374..0000000
--- a/test/dummy/test/controllers/abraham_histories_controller_test.rb
+++ /dev/null
@@ -1,11 +0,0 @@
-# frozen_string_literal: true
-
-require "test_helper"
-
-class AbrahamHistoriesControllerTest < ActionDispatch::IntegrationTest
-  test "should create AbrahamHistory" do
-    assert_difference ["AbrahamHistory.count"] do
-      post abraham_histories_url, as: :json, params: { abraham_history: { action_name: "foo", controller_name: "bar", tour_name: "baz" } }
-    end
-  end
-end