diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..b30f70f
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,81 @@
+name: CI
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v5
+
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          bundler-cache: true
+          rubygems: latest
+
+      - name: Run RuboCop
+        run: bundle exec rubocop --fail-level warning --display-only-fail-level-offenses --format github
+
+  test:
+    name: Test - ${{ matrix.gemfile }} - Ruby ${{ matrix.ruby }}
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby: ["3.0", 3.1, 3.2, 3.3, 3.4]
+        gemfile:
+          [
+            activesupport-7.1,
+            activesupport-7.2,
+            activesupport-8.0,
+            activesupport-8.1,
+          ]
+        exclude:
+          # Rails 7.2 is >= 3.1
+          - ruby: "3.0"
+            gemfile: activesupport-7.2
+          # Rails 8.0 is >= 3.2
+          - ruby: "3.0"
+            gemfile: activesupport-8.0
+          - ruby: 3.1
+            gemfile: activesupport-8.0
+          # Rails 8.1 is >= 3.2
+          - ruby: "3.0"
+            gemfile: activesupport-8.1
+          - ruby: 3.1
+            gemfile: activesupport-8.1
+
+    env:
+      BUNDLE_GEMFILE: ${{ github.workspace }}/gemfiles/${{ matrix.gemfile }}.gemfile
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v5
+      - name: Update .ruby-version with matrix value
+        run: echo "${{ matrix.ruby }}" >| .ruby-version
+      # Dependencies
+      - name: Set up Ruby and bundle install
+        uses: ruby/setup-ruby@v1
+        with:
+          bundler-cache: true
+          rubygems: latest
+
+      # Test
+      - name: Run Unit tests
+        run: bundle exec rspec
+
+      - name: Publish Test Results
+        uses: mikepenz/action-junit-report@v4
+        if: always()
+        with:
+          check_name: Test Results
+          report_paths: tmp/rspec.xml
+          detailed_summary: true
diff --git a/.gitignore b/.gitignore
index 8eb3b06..a5826e9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,3 +10,4 @@
 
 # rspec failure tracking
 .rspec_status
+marsh_grass*.gem
diff --git a/.rspec b/.rspec
index 8c18f1a..94c8957 100644
--- a/.rspec
+++ b/.rspec
@@ -1,2 +1,3 @@
 --format documentation
+--format RspecJunitFormatter --out tmp/rspec.xml
 --color
diff --git a/.ruby-version b/.ruby-version
new file mode 100644
index 0000000..2aa5131
--- /dev/null
+++ b/.ruby-version
@@ -0,0 +1 @@
+3.4.7
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 6a40ff0..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,5 +0,0 @@
-sudo: false
-language: ruby
-rvm:
-  - 2.3.6
-before_install: gem install bundler -v 1.16.1
diff --git a/Gemfile b/Gemfile
index 6a1e17a..f857e45 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,3 +4,8 @@ git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
 
 # Specify your gem's dependencies in marsh_grass.gemspec
 gemspec
+
+group :development, :test do
+  gem 'rubocop'
+  gem 'rspec_junit_formatter'
+end
diff --git a/gemfiles/activesupport-7.1.gemfile b/gemfiles/activesupport-7.1.gemfile
new file mode 100644
index 0000000..9ddea9c
--- /dev/null
+++ b/gemfiles/activesupport-7.1.gemfile
@@ -0,0 +1,5 @@
+source "https://rubygems.org"
+
+gem 'activesupport', '~> 7.1.0'
+
+eval_gemfile "../Gemfile"
diff --git a/gemfiles/activesupport-7.2.gemfile b/gemfiles/activesupport-7.2.gemfile
new file mode 100644
index 0000000..e112987
--- /dev/null
+++ b/gemfiles/activesupport-7.2.gemfile
@@ -0,0 +1,5 @@
+source "https://rubygems.org"
+
+gem 'activesupport', '~> 7.2.0'
+
+eval_gemfile "../Gemfile"
diff --git a/gemfiles/activesupport-8.0.gemfile b/gemfiles/activesupport-8.0.gemfile
new file mode 100644
index 0000000..63a75b7
--- /dev/null
+++ b/gemfiles/activesupport-8.0.gemfile
@@ -0,0 +1,5 @@
+source "https://rubygems.org"
+
+gem 'activesupport', '~> 8.0.0'
+
+eval_gemfile "../Gemfile"
diff --git a/gemfiles/activesupport-8.1.gemfile b/gemfiles/activesupport-8.1.gemfile
new file mode 100644
index 0000000..b77d4f9
--- /dev/null
+++ b/gemfiles/activesupport-8.1.gemfile
@@ -0,0 +1,5 @@
+source "https://rubygems.org"
+
+gem 'activesupport', '~> 8.1.0'
+
+eval_gemfile "../Gemfile"
diff --git a/spec/marsh_grass_spec.rb b/spec/marsh_grass_spec.rb
index f1ac3c0..2fb68d8 100644
--- a/spec/marsh_grass_spec.rb
+++ b/spec/marsh_grass_spec.rb
@@ -124,7 +124,7 @@ def make_time(first, second)
 
     # Should run (24 * 60 * 60) = 86400x and have all hours, minutes, and seconds of the day
     # This test is too slow to run by default, so it is commented out.
-    xit 'allows testing against an iteration of hours, minutes, and seconds', time_of_day: %i[hours minutes seconds] do
+    it 'allows testing against an iteration of hours, minutes, and seconds', time_of_day: %i[hours minutes seconds], skip: 'Too slow to run by default' do
       hours_minutes_and_seconds_to_run << Time.now.strftime('%H:%M:%S')
     end
   end