diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..3b4423d
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,54 @@
+name: CI
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref_name }}
+  cancel-in-progress: true
+
+on:
+  workflow_call:
+  push:
+    branches:
+      - kiskolabs/add_rails_6.1_and_ruby_3_4
+
+  pull_request:
+    branches:
+      - kiskolabs/add_rails_6.1_and_ruby_3_4
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        ruby: ['2.6', '2.7', '3.0', '3.4']
+        gemfile:
+          - Gemfile
+          - Gemfile.rails-5.0.x
+          - Gemfile.rails-5.1.x
+          - Gemfile.rails-6.0.x
+          - Gemfile.rails-6.1.x
+
+        exclude:
+          - ruby: 3.0
+            gemfile: Gemfile.rails-5.0.x
+          - ruby: 3.4
+            gemfile: Gemfile.rails-5.0.x
+          - ruby: 3.0
+            gemfile: Gemfile.rails-5.1.x
+          - ruby: 3.4
+            gemfile: Gemfile.rails-5.1.x
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler: '2.4'
+          bundler-cache: true
+          cache-version: 1 # ignore contents of the cache and get and build all the gems anew.
+
+      - name: Run tests
+        run: |
+          bundle exec rspec
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
new file mode 100644
index 0000000..3f48cee
--- /dev/null
+++ b/.github/workflows/publish.yml
@@ -0,0 +1,33 @@
+name: Deploy to RubyGems
+
+on:
+  workflow_dispatch:
+  push:
+    tags:
+      - '*'
+    branches:
+      - kiskolabs/gha-publish-to-rubygems
+
+jobs:
+  test:
+    uses: ./.github/workflows/ci.yml
+  push:
+    runs-on: ubuntu-latest
+    needs: [test]
+    permissions:
+      contents: write
+      id-token: write
+    steps:
+      - name: Test
+        run: |
+          echo "Testing successful case"
+
+      # - uses: actions/checkout@v4
+      # - name: Set up Ruby
+      #   uses: ruby/setup-ruby@v1
+      #   with:
+      #     bundler-cache: true
+      #     ruby-version: 3.0
+
+      # # Release
+      # - uses: rubygems/release-gem@v1
diff --git a/.travis.yml b/.travis.yml
index 0225817..96c8bdf 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,6 +6,7 @@ rvm:
   - 2.6
   - 2.7
   - 3.0
+  - 3.4
 gemfile:
   - Gemfile
   - Gemfile.rails-5.0.x
@@ -16,11 +17,15 @@ jobs:
   exclude:
     - rvm: 3.0
       gemfile: Gemfile.rails-5.0.x
+    - rvm: 3.4
+      gemfile: Gemfile.rails-5.0.x
     - rvm: 3.0
       gemfile: Gemfile.rails-5.1.x
+    - rvm: 3.4
+      gemfile: Gemfile.rails-5.1.x
 script: "./bin/rspec spec"
 before_install:
-  - gem install bundler
+  - gem install bundler -v 2.0
 notifications:
   email: false
 deploy:
diff --git a/carpentry.gemspec b/carpentry.gemspec
index 4a77cd2..1ada44f 100644
--- a/carpentry.gemspec
+++ b/carpentry.gemspec
@@ -17,11 +17,18 @@ Gem::Specification.new do |s|
 
   s.files = Dir["{app,lib,config}/**/*"] + ["Rakefile", "Gemfile", "README.md"]
 
-  s.add_dependency("railties", ">= 4.2.0", "<= 6.1.4.1")
+  s.add_dependency("railties", ">= 4.2.0", "~> 6.1.0")
 
   s.add_development_dependency "rdoc"
-  s.add_development_dependency "rails", ">= 4.2.0", "<= 6.1.4.1"
-  s.add_development_dependency "capybara", "~> 2.13"
+  s.add_development_dependency "rails", ">= 4.2.0", "~> 6.1.0"
+  s.add_development_dependency "concurrent-ruby", "<= 1.3.4"
+  s.add_development_dependency "capybara", ">= 2.13"
   s.add_development_dependency "autotest-standalone"
-  s.add_development_dependency "rspec-rails", "~> 3.4"
+  s.add_development_dependency "rspec-rails"
+
+  if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new('3.4')
+    s.add_development_dependency "bigdecimal"
+    s.add_development_dependency "mutex_m"
+    s.add_development_dependency "drb"
+  end
 end
diff --git a/lib/carpentry/version.rb b/lib/carpentry/version.rb
index 97d19cf..a3692ab 100644
--- a/lib/carpentry/version.rb
+++ b/lib/carpentry/version.rb
@@ -1,3 +1,3 @@
 module Carpentry
-  VERSION = "2.2.5"
+  VERSION = "2.2.6"
 end
diff --git a/spec/dummy/config/boot.rb b/spec/dummy/config/boot.rb
index ef36047..6266cfc 100644
--- a/spec/dummy/config/boot.rb
+++ b/spec/dummy/config/boot.rb
@@ -1,5 +1,5 @@
 # Set up gems listed in the Gemfile.
 ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../../../../Gemfile', __FILE__)
 
-require 'bundler/setup' if File.exists?(ENV['BUNDLE_GEMFILE'])
+require 'bundler/setup' if File.exist?(ENV['BUNDLE_GEMFILE'])
 $LOAD_PATH.unshift File.expand_path('../../../../lib', __FILE__)