diff --git a/lib/kangaru/testing/gem.rb b/lib/kangaru/testing/gem.rb
deleted file mode 100644
index 78da7da..0000000
--- a/lib/kangaru/testing/gem.rb
+++ /dev/null
@@ -1,57 +0,0 @@
-module Kangaru
-  module Testing
-    class Gem
-      class GemNotCreatedError < StandardError; end
-
-      DEFAULT_NAME = "some_gem".freeze
-      VIEWS_DIR    = "views".freeze
-
-      attr_reader :dir, :name
-
-      def initialize(dir:, name: DEFAULT_NAME)
-        @dir  = Pathname.new(dir)
-        @name = name
-      end
-
-      def path
-        @path ||= dir.join(name)
-      end
-
-      def lib_path
-        @lib_path ||= path.join("lib")
-      end
-
-      def main_file
-        @main_file ||= lib_path.join("#{name}.rb")
-      end
-
-      def gem_file(file)
-        lib_path.join(name, "#{file}.rb")
-      end
-
-      def gem_dir(dir)
-        lib_path.join(name, dir)
-      end
-
-      def view_path(controller:, action:)
-        gem_dir(VIEWS_DIR).join(controller, "#{action}.erb")
-      end
-
-      def created?
-        @created == true
-      end
-
-      def create!
-        `bundle gem #{path}`
-
-        @created = true
-      end
-
-      def load!
-        raise GemNotCreatedError, "gem must be created first" unless created?
-
-        require main_file.to_s
-      end
-    end
-  end
-end
diff --git a/sig/kangaru/testing/gem.rbs b/sig/kangaru/testing/gem.rbs
deleted file mode 100644
index 1c32df8..0000000
--- a/sig/kangaru/testing/gem.rbs
+++ /dev/null
@@ -1,31 +0,0 @@
-module Kangaru
-  module Testing
-    class Gem
-      class GemNotCreatedError < StandardError
-      end
-
-      DEFAULT_NAME: String
-      VIEWS_DIR: String
-
-      @created: bool
-
-      attr_reader dir: Pathname
-      attr_reader name: String
-      attr_reader path: Pathname
-      attr_reader lib_path: Pathname
-      attr_reader main_file: Pathname
-
-      def initialize: (dir: String, ?name: String) -> void
-
-      def gem_file: (String file) -> Pathname
-
-      def gem_dir: (String dir) -> Pathname
-
-      def created?: -> bool
-
-      def create!: -> void
-
-      def load!: -> void
-    end
-  end
-end
diff --git a/spec/kangaru/testing/gem_spec.rb b/spec/kangaru/testing/gem_spec.rb
deleted file mode 100644
index 044380d..0000000
--- a/spec/kangaru/testing/gem_spec.rb
+++ /dev/null
@@ -1,193 +0,0 @@
-RSpec.describe Kangaru::Testing::Gem, :with_temp_dir do
-  subject(:gem) { described_class.new(**attributes) }
-
-  let(:attributes) { { dir:, name: }.compact }
-
-  let(:name) { "some_gem" }
-  let(:dir)  { temp_dir }
-
-  shared_examples :returns_path do |options|
-    let(:expected_path) { options[:for] }
-
-    it "returns a Pathname" do
-      expect(subject).to be_a(Pathname)
-    end
-
-    it "sets the expected path" do
-      expect(subject.to_s).to eq(expected_path)
-    end
-  end
-
-  describe "#initialize" do
-    context "when gem name is not specified" do
-      let(:name) { nil }
-
-      it "sets the directory" do
-        expect(gem.dir.to_s).to eq(dir)
-      end
-
-      it "sets the name to the default" do
-        expect(gem.name).to eq(described_class::DEFAULT_NAME)
-      end
-    end
-
-    context "when gem name is specified" do
-      let(:name) { "some_gem" }
-
-      it "sets the directory" do
-        expect(gem.dir.to_s).to eq(dir)
-      end
-
-      it "sets the name to the specified value" do
-        expect(gem.name).to eq(name)
-      end
-    end
-  end
-
-  describe "#path" do
-    subject(:path) { gem.path }
-
-    it "returns a Pathname" do
-      expect(path).to be_a(Pathname)
-    end
-
-    it "returns the expected path" do
-      expect(path.to_s).to eq("#{dir}/#{name}")
-    end
-  end
-
-  describe "#lib_path" do
-    subject(:lib_path) { gem.lib_path }
-
-    it "returns a Pathname" do
-      expect(lib_path).to be_a(Pathname)
-    end
-
-    it "sets the expected path" do
-      expect(lib_path.to_s).to eq("#{dir}/#{name}/lib")
-    end
-  end
-
-  describe "#main_file" do
-    subject(:main_file) { gem.main_file }
-
-    it "returns a Pathname" do
-      expect(main_file).to be_a(Pathname)
-    end
-
-    it "returns the expected path" do
-      expect(main_file.to_s).to eq("#{dir}/#{name}/lib/#{name}.rb")
-    end
-  end
-
-  describe "#gem_file" do
-    subject(:gem_file) { gem.gem_file(file) }
-
-    let(:file) { "some_file" }
-
-    it "returns a Pathname" do
-      expect(gem_file).to be_a(Pathname)
-    end
-
-    it "returns the expected path" do
-      expect(gem_file.to_s).to eq("#{dir}/#{name}/lib/#{name}/#{file}.rb")
-    end
-  end
-
-  describe "#gem_dir" do
-    subject(:gem_dir) { gem.gem_dir(dir_arg) }
-
-    let(:dir_arg) { "some_dir" }
-
-    it "returns a Pathname" do
-      expect(gem_dir).to be_a(Pathname)
-    end
-
-    it "returns the expected path" do
-      expect(gem_dir.to_s).to eq("#{dir}/#{name}/lib/#{name}/#{dir_arg}")
-    end
-  end
-
-  describe "#view_file", skip: :deprecated do
-    subject(:view_file) { gem.view_file(controller:, action:) }
-
-    let(:controller) { "default" }
-
-    let(:action) { :do_something }
-
-    include_examples :returns_path, for:
-      "/foo/bar/double/lib/double/views/default/do_something.erb"
-  end
-
-  describe "#created?" do
-    context "when gem has not been created" do
-      it "returns false" do
-        expect(gem).not_to be_created
-      end
-    end
-
-    context "when gem has been created" do
-      before { gem.create! }
-
-      it "returns true" do
-        expect(gem).to be_created
-      end
-    end
-  end
-
-  describe "#create!" do
-    subject(:create!) { gem.create! }
-
-    let(:gem_path) { File.join(temp_dir, name) }
-
-    let(:lib_dir)  { File.join(gem_path, "lib") }
-
-    it "creates the gem in the specified directory" do
-      expect { create! }.to create_dir(name).in(temp_dir)
-    end
-
-    it "generates a Gemfile" do
-      expect { create! }.to create_file("Gemfile").in(gem_path)
-    end
-
-    it "generates a gemspec" do
-      expect { create! }.to create_file("#{name}.gemspec").in(gem_path)
-    end
-
-    it "generates a lib directory" do
-      expect { create! }.to create_dir("lib").in(gem_path)
-    end
-
-    it "generates a main file" do
-      expect { create! }.to create_file("#{name}.rb").in(lib_dir)
-    end
-  end
-
-  describe "#load!" do
-    subject(:load!) { gem.load! }
-
-    after do
-      Object.send(:remove_const, :SomeGem) if Object.const_defined?(:SomeGem)
-    end
-
-    context "when gem has not been created" do
-      it "raises an error" do
-        expect { load! }.to raise_error(
-          described_class::GemNotCreatedError,
-          "gem must be created first"
-        )
-      end
-    end
-
-    context "when gem has been created" do
-      before { gem.create! }
-
-      it "loads the gem" do
-        expect { load! }
-          .to change { Object.const_defined?(:SomeGem) }
-          .from(false)
-          .to(true)
-      end
-    end
-  end
-end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 194994d..cfee15b 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -18,10 +18,6 @@ def load_support_files!
 
   config.order = :random
 
-  config.include FileHelper
-  config.include GemHelper
-  config.include TempDirHelper
-
   config.after(with_gem: true) do
     if Kangaru.instance_variable_defined?(:@application)
       Kangaru.remove_instance_variable(:@application)
diff --git a/spec/support/file_helper.rb b/spec/support/file_helper.rb
deleted file mode 100644
index 84a70b5..0000000
--- a/spec/support/file_helper.rb
+++ /dev/null
@@ -1,31 +0,0 @@
-module FileHelper
-  extend RSpec::Matchers::DSL
-
-  matcher :create_dir do |filename|
-    supports_block_expectations
-
-    match do |action|
-      path = File.join(@dir, filename)
-
-      expect(&action).to change { Dir.exist?(path) }.from(false).to(true)
-    end
-
-    chain :in do |dir|
-      @dir = dir
-    end
-  end
-
-  matcher :create_file do |filename|
-    supports_block_expectations
-
-    match do |action|
-      path = File.join(@dir, filename)
-
-      expect(&action).to change { File.exist?(path) }.from(false).to(true)
-    end
-
-    chain :in do |dir|
-      @dir = dir
-    end
-  end
-end
diff --git a/spec/support/gem_helper.rb b/spec/support/gem_helper.rb
deleted file mode 100644
index 83104a3..0000000
--- a/spec/support/gem_helper.rb
+++ /dev/null
@@ -1,21 +0,0 @@
-require "tmpdir"
-
-module GemHelper
-  RSpec.configure do |config|
-    config.around(with_gem_deprecated: true) do |spec|
-      self.class.class_eval { attr_reader :gem }
-
-      Dir.mktmpdir do |dir|
-        @gem = Kangaru::Testing::Gem.new(dir:).tap(&:create!)
-
-        spec.run
-
-        Object.send(:remove_const, :SomeGem) if Object.const_defined?(:SomeGem)
-
-        if Kangaru.instance_variable_defined?(:@application)
-          Kangaru.remove_instance_variable(:@application)
-        end
-      end
-    end
-  end
-end
diff --git a/spec/support/temp_dir_helper.rb b/spec/support/temp_dir_helper.rb
deleted file mode 100644
index 1e45a6b..0000000
--- a/spec/support/temp_dir_helper.rb
+++ /dev/null
@@ -1,15 +0,0 @@
-module TempDirHelper
-  RSpec.configure do |config|
-    config.around(with_temp_dir: true) do |spec|
-      self.class.class_eval { attr_reader :temp_dir }
-
-      Dir.mktmpdir do |temp_dir|
-        @temp_dir = temp_dir
-
-        spec.run
-
-        remove_instance_variable(:@temp_dir)
-      end
-    end
-  end
-end