diff --git a/.github/workflows/tests-schedule.yml b/.github/workflows/tests-schedule.yml
new file mode 100644
index 0000000..42ae378
--- /dev/null
+++ b/.github/workflows/tests-schedule.yml
@@ -0,0 +1,12 @@
+name: tests schedule
+on:
+  schedule:
+    # Run at 06:20 UTC every Monday (weekly)
+    - cron: "20 6 * * 1"
+  workflow_dispatch:
+
+jobs:
+  run-tests:
+    if: ${{ github.repository == 'simplymadeapps/simple-scheduler' }}
+    uses: ./.github/workflows/tests.yml
+    secrets: inherit
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 268ce44..47aba51 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -4,28 +4,26 @@ on:
   push:
     branches:
       - master
+  workflow_call:
+
 jobs:
   tests:
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
-        ruby: [2.7.6, 3.0.4, 3.1.2]
+        ruby: [3.2.9, 3.3.10, 3.4.7]
     env:
-      CC_TEST_REPORTER_ID: ${{ secrets.CC_TEST_REPORTER_ID }}
       RAILS_ENV: test
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v5
+
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby }}
           bundler-cache: true # runs 'bundle install' and caches installed gems automatically
-      - uses: supercharge/redis-github-action@1.4.0
-      - name: Install Code Climate
-        run: |
-          curl -L https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64 > ./cc-test-reporter
-          chmod +x ./cc-test-reporter
-          ./cc-test-reporter before-build
+
+      - uses: supercharge/redis-github-action@1.8.0
 
       - name: Appraisal Install
         run: bundle exec appraisal install
@@ -35,6 +33,3 @@ jobs:
 
       - name: Rspec
         run: bundle exec appraisal rspec
-
-      - name: Code Climate
-        run: ./cc-test-reporter after-build --exit-code $?
diff --git a/.rubocop.yml b/.rubocop.yml
index 3de21fa..f728835 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -4,7 +4,10 @@ AllCops:
     - "vendor/bundle/**/*"
     - "gemfiles/**/*"
   NewCops: enable
-  TargetRubyVersion: 2.7
+  TargetRubyVersion: 3.2
+
+Gemspec/DevelopmentDependencies:
+  EnforcedStyle: gemspec
 
 Layout/FirstArrayElementIndentation:
   Enabled: false
diff --git a/Appraisals b/Appraisals
index 6638dc7..1d718ec 100644
--- a/Appraisals
+++ b/Appraisals
@@ -1,13 +1,18 @@
 # frozen_string_literal: true
 
-appraise "rails-6" do
-  gem "activejob", "~> 6.0"
-  gem "sidekiq", "~> 6.0"
+appraise "rails-7" do
+  gem "activejob", "~> 7.2"
+  gem "sidekiq", "~> 7.0"
 end
 
-appraise "rails-7" do
-  gem "activejob", "~> 7.0"
-  gem "sidekiq", "~> 6.0"
+appraise "rails-8" do
+  gem "activejob", "~> 8.0.0"
+  gem "sidekiq", "~> 8.0"
+end
+
+appraise "rails-8-1" do
+  gem "activejob", "~> 8.1.0"
+  gem "sidekiq", "~> 8.0"
 end
 
 appraise "latest" do
diff --git a/README.md b/README.md
index 7b10665..c416c3f 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,6 @@
 # Simple Scheduler
 
 [![tests](https://github.com/simplymadeapps/simple_scheduler/actions/workflows/tests.yml/badge.svg)](https://github.com/simplymadeapps/simple_scheduler/actions/workflows/tests.yml)
-[![Code Climate](https://codeclimate.com/github/simplymadeapps/simple_scheduler/badges/gpa.svg)](https://codeclimate.com/github/simplymadeapps/simple_scheduler)
-[![Test Coverage](https://codeclimate.com/github/simplymadeapps/simple_scheduler/badges/coverage.svg)](https://codeclimate.com/github/simplymadeapps/simple_scheduler/coverage)
 [![Yard Docs](http://img.shields.io/badge/yard-docs-blue.svg)](http://www.rubydoc.info/github/simplymadeapps/simple_scheduler/)
 
 Simple Scheduler is a scheduling add-on that is designed to be used with
@@ -27,7 +25,7 @@ Every option we evaluated seems to have the same flaw: **If your server is down,
 
 You must be using:
 
-- Rails 5.0+
+- Rails 7.2+
 - ActiveJob
 - [Sidekiq](http://sidekiq.org)
 - [Heroku Scheduler](https://elements.heroku.com/addons/scheduler)*
diff --git a/gemfiles/rails_7.gemfile b/gemfiles/rails_7.gemfile
index 0a2938f..d3fa671 100644
--- a/gemfiles/rails_7.gemfile
+++ b/gemfiles/rails_7.gemfile
@@ -2,7 +2,7 @@
 
 source "https://rubygems.org"
 
-gem "activejob", "~> 7.0"
-gem "sidekiq", "~> 6.0"
+gem "activejob", "~> 7.2"
+gem "sidekiq", "~> 7.0"
 
 gemspec path: "../"
diff --git a/gemfiles/rails_6.gemfile b/gemfiles/rails_8.gemfile
similarity index 63%
rename from gemfiles/rails_6.gemfile
rename to gemfiles/rails_8.gemfile
index 67865c0..3867701 100644
--- a/gemfiles/rails_6.gemfile
+++ b/gemfiles/rails_8.gemfile
@@ -2,7 +2,7 @@
 
 source "https://rubygems.org"
 
-gem "activejob", "~> 6.0"
-gem "sidekiq", "~> 6.0"
+gem "activejob", "~> 8.0.0"
+gem "sidekiq", "~> 8.0"
 
 gemspec path: "../"
diff --git a/gemfiles/rails_8_1.gemfile b/gemfiles/rails_8_1.gemfile
new file mode 100644
index 0000000..6f863c5
--- /dev/null
+++ b/gemfiles/rails_8_1.gemfile
@@ -0,0 +1,8 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "activejob", "~> 8.1.0"
+gem "sidekiq", "~> 8.0"
+
+gemspec path: "../"
diff --git a/lib/simple_scheduler.rb b/lib/simple_scheduler.rb
index 5a18226..5291ce9 100644
--- a/lib/simple_scheduler.rb
+++ b/lib/simple_scheduler.rb
@@ -2,12 +2,12 @@
 
 require "active_job"
 require "sidekiq/api"
-require_relative "./simple_scheduler/at"
-require_relative "./simple_scheduler/future_job"
-require_relative "./simple_scheduler/railtie"
-require_relative "./simple_scheduler/scheduler_job"
-require_relative "./simple_scheduler/task"
-require_relative "./simple_scheduler/version"
+require_relative "simple_scheduler/at"
+require_relative "simple_scheduler/future_job"
+require_relative "simple_scheduler/railtie"
+require_relative "simple_scheduler/scheduler_job"
+require_relative "simple_scheduler/task"
+require_relative "simple_scheduler/version"
 
 # Module for scheduling jobs at specific times using Sidekiq.
 module SimpleScheduler
diff --git a/lib/simple_scheduler/at.rb b/lib/simple_scheduler/at.rb
index 6380537..c23b245 100644
--- a/lib/simple_scheduler/at.rb
+++ b/lib/simple_scheduler/at.rb
@@ -1,7 +1,11 @@
 # frozen_string_literal: true
 
+require "delegate"
+
 module SimpleScheduler
-  # A Time class for parsing the :at option on a task into the first time it should run.
+  # A delegator that parses the :at option on a task into the first time it should run.
+  # Instead of inheriting from Time (which conflicts with ActiveSupport time helpers),
+  # this wraps a Time instance and selectively overrides hour/hour? semantics.
   #   Time.now
   #   # => 2016-12-09 08:24:11 -0600
   #   SimpleScheduler::At.new("*:30")
@@ -10,8 +14,8 @@ module SimpleScheduler
   #   # => 2016-12-10 01:00:00 -0600
   #   SimpleScheduler::At.new("Sun 0:00")
   #   # => 2016-12-11 00:00:00 -0600
-  class At < Time
-    AT_PATTERN = /\A(Sun|Mon|Tue|Wed|Thu|Fri|Sat)?\s?(?:\*{1,2}|((?:\b[0-1]?[0-9]|2[0-3]))):([0-5]\d)\z/.freeze
+  class At < SimpleDelegator
+    AT_PATTERN = /\A(Sun|Mon|Tue|Wed|Thu|Fri|Sat)?\s?(?:\*{1,2}|((?:\b[0-1]?[0-9]|2[0-3]))):([0-5]\d)\z/
     DAYS = %w[Sun Mon Tue Wed Thu Fri Sat].freeze
 
     # Error class raised when an invalid string is given for the time.
@@ -30,15 +34,13 @@ class InvalidTime < StandardError; end
     def initialize(at, time_zone = nil)
       @at = at
       @time_zone = time_zone || Time.zone
-      super(parsed_time.year, parsed_time.month, parsed_time.day,
-            parsed_time.hour, parsed_time.min, parsed_time.sec, parsed_time.utc_offset)
+      super(parsed_time) # Delegate all Time methods to parsed Time instance
     end
 
-    # Always returns the specified hour if the hour was given, otherwise
-    # it returns the hour calculated based on other specified options.
+    # Returns the specified hour if present in the at string, else the delegated Time's hour.
     # @return [Integer]
     def hour
-      hour? ? at_hour : super
+      hour? ? at_hour : __getobj__.hour
     end
 
     # Returns whether or not the hour was specified in the :at string.
@@ -51,8 +53,9 @@ def hour?
 
     def at_match
       @at_match ||= begin
-        match = AT_PATTERN.match(@at)
         raise InvalidTime, "The `at` option is required." if @at.nil?
+
+        match = AT_PATTERN.match(@at)
         raise InvalidTime, "The `at` option '#{@at}' is invalid." if match.nil?
 
         match
@@ -77,11 +80,11 @@ def at_wday?
 
     def next_hour
       @next_hour ||= begin
-        next_hour = at_hour
+        h = at_hour
         # Add an additional hour if a specific hour wasn't given, if the minutes
         # given are less than the current time's minutes.
-        next_hour += 1 if next_hour?
-        next_hour
+        h += 1 if next_hour?
+        h
       end
     end
 
@@ -94,37 +97,36 @@ def now
     end
 
     def parsed_day
-      parsed_day = now.beginning_of_day
+      day = now.beginning_of_day
 
       # If no day of the week is given, return today
-      return parsed_day unless at_wday?
+      return day unless at_wday?
 
       # Shift to the correct day of the week if given
-      add_days = at_wday - parsed_day.wday
-      add_days += 7 if parsed_day.wday > at_wday
-      parsed_day + add_days.days
+      add_days = at_wday - day.wday
+      add_days += 7 if day.wday > at_wday
+      day + add_days.days
     end
 
     # Returns the very first time a job should be run for the scheduled task.
     # @return [Time]
     def parsed_time
-      return @parsed_time if @parsed_time
+      return @parsed_time if defined?(@parsed_time) && @parsed_time
 
-      @parsed_time = parsed_day
+      time_object = parsed_day
       change_hour = next_hour
-
       # There is no hour 24, so we need to move to the next day
       if change_hour == 24
-        @parsed_time = 1.day.from_now(@parsed_time)
+        time_object = 1.day.from_now(time_object)
         change_hour = 0
       end
-
-      @parsed_time = @parsed_time.change(hour: change_hour, min: at_min)
+      time_object = time_object.change(hour: change_hour, min: at_min)
 
       # If the parsed time is still before the current time, add an additional day if
       # the week day wasn't specified or add an additional week to get the correct time.
-      @parsed_time += at_wday? ? 1.week : 1.day if now > @parsed_time
-      @parsed_time
+      time_object += at_wday? ? 1.week : 1.day if now > time_object
+
+      @parsed_time = time_object
     end
   end
 end
diff --git a/lib/simple_scheduler/version.rb b/lib/simple_scheduler/version.rb
index 9d359cd..dfc2f53 100644
--- a/lib/simple_scheduler/version.rb
+++ b/lib/simple_scheduler/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module SimpleScheduler
-  VERSION = "1.2.0"
+  VERSION = "2.0.0"
 end
diff --git a/simple_scheduler.gemspec b/simple_scheduler.gemspec
index e23bb73..83d2f19 100644
--- a/simple_scheduler.gemspec
+++ b/simple_scheduler.gemspec
@@ -21,16 +21,17 @@ Gem::Specification.new do |s|
   s.license = "MIT"
 
   s.metadata["rubygems_mfa_required"] = "true"
-  s.required_ruby_version = ">= 2.7.0"
+  s.required_ruby_version = ">= 3.2.0"
 
   s.files = Dir["{lib}/**/*", "MIT-LICENSE", "Rakefile", "README.md"]
 
-  s.add_dependency "activejob", ">= 6.0"
-  s.add_dependency "sidekiq", ">= 6.0"
+  s.add_dependency "activejob", ">= 7.2"
+  s.add_dependency "sidekiq", ">= 7.0"
+
   s.add_development_dependency "appraisal"
   s.add_development_dependency "rainbow"
-  s.add_development_dependency "rspec-rails"
+  s.add_development_dependency "rspec-rails", "~> 8"
   s.add_development_dependency "rubocop", "~> 1.28"
-  s.add_development_dependency "simplecov", "< 0.18" # https://github.com/codeclimate/test-reporter/issues/413
+  s.add_development_dependency "simplecov"
   s.add_development_dependency "simplecov-rcov"
 end
diff --git a/spec/simple_scheduler/future_job_spec.rb b/spec/simple_scheduler/future_job_spec.rb
index 2d856d0..4449d22 100644
--- a/spec/simple_scheduler/future_job_spec.rb
+++ b/spec/simple_scheduler/future_job_spec.rb
@@ -170,7 +170,7 @@
     let(:application_job) do
       Sidekiq::SortedEntry.new(
         nil,
-        nil,
+        1,
         "wrapped" => "SomeApplicationJob",
         "class" => "ActiveJob::QueueAdapters::SidekiqAdapter::JobWrapper"
       )
@@ -179,7 +179,7 @@
     let(:simple_scheduler_job1) do
       Sidekiq::SortedEntry.new(
         nil,
-        nil,
+        1,
         "wrapped" => "SimpleScheduler::FutureJob",
         "class" => "ActiveJob::QueueAdapters::SidekiqAdapter::JobWrapper",
         "args" => [{ "arguments" => [{ "class" => "TestJob", "name" => "test_task" }] }]
@@ -189,7 +189,7 @@
     let(:simple_scheduler_job2) do
       Sidekiq::SortedEntry.new(
         nil,
-        nil,
+        1,
         "wrapped" => "SimpleScheduler::FutureJob",
         "class" => "ActiveJob::QueueAdapters::SidekiqAdapter::JobWrapper",
         "args" => [{ "arguments" => [{ "class" => "AnotherJob", "name" => "another_task" }] }]
diff --git a/spec/simple_scheduler/task_spec.rb b/spec/simple_scheduler/task_spec.rb
index 5bc9790..2321ca1 100644
--- a/spec/simple_scheduler/task_spec.rb
+++ b/spec/simple_scheduler/task_spec.rb
@@ -29,7 +29,7 @@
     let(:sidekiq_entry_matching_class_and_name) do
       Sidekiq::SortedEntry.new(
         nil,
-        nil,
+        1,
         "wrapped" => "SimpleScheduler::FutureJob",
         "class" => "ActiveJob::QueueAdapters::SidekiqAdapter::JobWrapper",
         "args" => [{ "arguments" => [{ "class" => "TestJob", "name" => "test_task" }] }]
@@ -39,7 +39,7 @@
     let(:sidekiq_entry_matching_class_wrong_task_name) do
       Sidekiq::SortedEntry.new(
         nil,
-        nil,
+        1,
         "wrapped" => "SimpleScheduler::FutureJob",
         "class" => "ActiveJob::QueueAdapters::SidekiqAdapter::JobWrapper",
         "args" => [{ "arguments" => [{ "class" => "TestJob", "name" => "wrong_task" }] }]
@@ -49,7 +49,7 @@
     let(:sidekiq_entry_wrong_class) do
       Sidekiq::SortedEntry.new(
         nil,
-        nil,
+        1,
         "wrapped" => "SimpleScheduler::FutureJob",
         "class" => "ActiveJob::QueueAdapters::SidekiqAdapter::JobWrapper",
         "args" => [{ "arguments" => [{ "class" => "SomeOtherJob", "name" => "test_task" }] }]