diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index d9a4b5c..45bae5a 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -1,6 +1,10 @@
 name: Main
 
-on: [push,pull_request,workflow_dispatch]
+on:
+  push:
+    branches: [main]
+  pull_request:
+  workflow_dispatch:
 
 jobs:
   build:
@@ -20,12 +24,12 @@ jobs:
     strategy:
       matrix:
         ruby:
-          - 2.5.9
-          - 2.6.10
-          - 2.7.7
-          - 3.0.5
-          - 3.1.3
-          - 3.2.0
+          - 2.7.8
+          - 3.0.7
+          - 3.1.7
+          - 3.2.9
+          - 3.3.9
+          - 3.4.7
         gemfile:
           - gemfiles/activejob_4.2.x.gemfile
           - gemfiles/activejob_5.2.x.gemfile
@@ -35,78 +39,91 @@ jobs:
           - gemfiles/activejob_7.1.x.gemfile
           - gemfiles/activejob_7.2.x.gemfile
           - gemfiles/activejob_8.0.x.gemfile
+          - gemfiles/activejob_8.1.x.gemfile
           - gemfiles/sidekiq_4.x.gemfile
           - gemfiles/sidekiq_5.x.gemfile
           - gemfiles/sidekiq_6.x.gemfile
           - gemfiles/sidekiq_7.x.gemfile
         exclude:
-          - ruby: 2.5.9
-            gemfile: gemfiles/activejob_7.0.x.gemfile
-          - ruby: 2.5.9
-            gemfile: gemfiles/activejob_7.1.x.gemfile
-          - ruby: 2.5.9
-            gemfile: gemfiles/activejob_7.2.x.gemfile
-          - ruby: 2.5.9
-            gemfile: gemfiles/activejob_8.0.x.gemfile
-          - ruby: 2.5.9
-            gemfile: gemfiles/sidekiq_6.x.gemfile
-          - ruby: 2.5.9
-            gemfile: gemfiles/sidekiq_7.x.gemfile
-          - ruby: 2.6.10
-            gemfile: gemfiles/activejob_7.0.x.gemfile
-          - ruby: 2.6.10
-            gemfile: gemfiles/activejob_7.1.x.gemfile
-          - ruby: 2.6.10
-            gemfile: gemfiles/activejob_7.2.x.gemfile
-          - ruby: 2.6.10
-            gemfile: gemfiles/activejob_8.0.x.gemfile
-          - ruby: 2.6.10
-            gemfile: gemfiles/sidekiq_6.x.gemfile
-          - ruby: 2.6.10
-            gemfile: gemfiles/sidekiq_7.x.gemfile
-          - ruby: 2.7.7
+          - ruby: 2.7.8
             gemfile: gemfiles/activejob_4.2.x.gemfile
-          - ruby: 2.7.7
+          - ruby: 2.7.8
             gemfile: gemfiles/activejob_7.2.x.gemfile
-          - ruby: 2.7.7
+          - ruby: 2.7.8
             gemfile: gemfiles/activejob_8.0.x.gemfile
-          - ruby: 2.7.7
+          - ruby: 2.7.8
+            gemfile: gemfiles/activejob_8.1.x.gemfile
+          - ruby: 2.7.8
             gemfile: gemfiles/sidekiq_4.x.gemfile
-          - ruby: 3.0.5
+          - ruby: 2.7.8
+            gemfile: gemfiles/sidekiq_8.x.gemfile
+          - ruby: 3.0.7
             gemfile: gemfiles/activejob_4.2.x.gemfile
-          - ruby: 3.0.5
+          - ruby: 3.0.7
             gemfile: gemfiles/activejob_5.2.x.gemfile
-          - ruby: 3.0.5
+          - ruby: 3.0.7
             gemfile: gemfiles/activejob_7.2.x.gemfile
-          - ruby: 3.0.5
+          - ruby: 3.0.7
             gemfile: gemfiles/activejob_8.0.x.gemfile
-          - ruby: 3.0.5
+          - ruby: 3.0.7
+            gemfile: gemfiles/activejob_8.1.x.gemfile
+          - ruby: 3.0.7
             gemfile: gemfiles/sidekiq_4.x.gemfile
-          - ruby: 3.0.5
+          - ruby: 3.0.7
             gemfile: gemfiles/sidekiq_5.x.gemfile
-          - ruby: 3.1.3
+          - ruby: 3.0.7
+            gemfile: gemfiles/sidekiq_8.x.gemfile
+          - ruby: 3.1.7
             gemfile: gemfiles/activejob_4.2.x.gemfile
-          - ruby: 3.1.3
+          - ruby: 3.1.7
             gemfile: gemfiles/activejob_5.2.x.gemfile
-          - ruby: 3.1.3
+          - ruby: 3.1.7
             gemfile: gemfiles/activejob_6.0.x.gemfile
-          - ruby: 3.1.3
+          - ruby: 3.1.7
             gemfile: gemfiles/activejob_8.0.x.gemfile
-          - ruby: 3.1.3
+          - ruby: 3.1.7
+            gemfile: gemfiles/activejob_8.1.x.gemfile
+          - ruby: 3.1.7
+            gemfile: gemfiles/sidekiq_4.x.gemfile
+          - ruby: 3.1.7
+            gemfile: gemfiles/sidekiq_5.x.gemfile
+          - ruby: 3.1.7
+            gemfile: gemfiles/sidekiq_8.x.gemfile
+          - ruby: 3.2.9
+            gemfile: gemfiles/activejob_4.2.x.gemfile
+          - ruby: 3.2.9
+            gemfile: gemfiles/activejob_5.2.x.gemfile
+          - ruby: 3.2.9
+            gemfile: gemfiles/activejob_6.0.x.gemfile
+          - ruby: 3.2.9
+            gemfile: gemfiles/activejob_7.1.x.gemfile
+          - ruby: 3.2.9
+            gemfile: gemfiles/sidekiq_4.x.gemfile
+          - ruby: 3.2.9
+            gemfile: gemfiles/sidekiq_5.x.gemfile
+          - ruby: 3.3.9
+            gemfile: gemfiles/activejob_4.2.x.gemfile
+          - ruby: 3.3.9
+            gemfile: gemfiles/activejob_5.2.x.gemfile
+          - ruby: 3.3.9
+            gemfile: gemfiles/activejob_6.0.x.gemfile
+          - ruby: 3.3.9
+            gemfile: gemfiles/activejob_7.1.x.gemfile
+          - ruby: 3.3.9
             gemfile: gemfiles/sidekiq_4.x.gemfile
-          - ruby: 3.1.3
+          - ruby: 3.3.9
             gemfile: gemfiles/sidekiq_5.x.gemfile
-          - ruby: 3.2.0
+          - ruby: 3.4.7
             gemfile: gemfiles/activejob_4.2.x.gemfile
-          - ruby: 3.2.0
+          - ruby: 3.4.7
             gemfile: gemfiles/activejob_5.2.x.gemfile
-          - ruby: 3.2.0
+          - ruby: 3.4.7
             gemfile: gemfiles/activejob_6.0.x.gemfile
-          - ruby: 3.2.0
+          - ruby: 3.4.7
             gemfile: gemfiles/activejob_7.1.x.gemfile
-          - ruby: 3.2.0
+          - ruby: 3.4.7
             gemfile: gemfiles/sidekiq_4.x.gemfile
-          - ruby: 3.2.0
+          - ruby: 3.3.9
             gemfile: gemfiles/sidekiq_5.x.gemfile
 
     steps:
diff --git a/.rubocop.yml b/.rubocop.yml
index 12ed9b1..4b841f3 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,7 +1,8 @@
-require: rubocop-rspec
+plugins:
+  - rubocop-rspec
 
 AllCops:
-  TargetRubyVersion: 2.5
+  TargetRubyVersion: 2.7
   NewCops: enable
   Exclude:
     - gemfiles/**/*
@@ -66,3 +67,12 @@ RSpec/AnyInstance:
 RSpec/LetSetup:
   Exclude:
     - spec/active_job/uniqueness/sidekiq_patch_spec.rb
+
+RSpec/IncludeExamples:
+  Enabled: false
+
+Naming/PredicateMethod:
+  Enabled: false
+
+Lint/FloatComparison:
+  Enabled: false
diff --git a/Appraisals b/Appraisals
index da90931..699b686 100644
--- a/Appraisals
+++ b/Appraisals
@@ -9,15 +9,15 @@ appraise 'activejob-5.2.x' do
 end
 
 appraise 'activejob-6.0.x' do
-  gem 'activejob', '~> 6.0.5'
+  gem 'activejob', '~> 6.0.6'
 end
 
 appraise 'activejob-6.1.x' do
-  gem 'activejob', '~> 6.1.6'
+  gem 'activejob', '~> 6.1.7'
 end
 
 appraise 'activejob-7.0.x' do
-  gem 'activejob', '~> 7.0.3'
+  gem 'activejob', '~> 7.0.8'
 end
 
 appraise 'activejob-7.1.x' do
@@ -32,6 +32,10 @@ appraise 'activejob-8.0.x' do
   gem 'activejob', '>= 8.0.0.rc1', '< 8.1'
 end
 
+appraise 'activejob-8.1.x' do
+  gem 'activejob', '>= 8.1.0.rc1', '< 8.2'
+end
+
 appraise 'sidekiq-4.x' do
   gem 'sidekiq', '~> 4.2'
   gem 'activejob', '~> 5.2'
@@ -47,5 +51,5 @@ appraise 'sidekiq-6.x' do
 end
 
 appraise 'sidekiq-7.x' do
-  gem 'sidekiq', '~> 7.0'
+  gem 'sidekiq', '~> 7.3'
 end
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 31d6fdd..8f44395 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## [Unreleased](https://github.com/veeqo/activejob-uniqueness/compare/v0.4.0...HEAD)
 
+- [#91](https://github.com/veeqo/activejob-uniqueness/pull/91) Add ActiveJob 8.1 support by [@viralpraxis](https://github.com/viralpraxis)
 
 ## [0.4.0](https://github.com/veeqo/activejob-uniqueness/compare/v0.3.2...v0.4.0) - 2024-12-07
 
diff --git a/activejob-uniqueness.gemspec b/activejob-uniqueness.gemspec
index 6e1c35a..69f52c7 100644
--- a/activejob-uniqueness.gemspec
+++ b/activejob-uniqueness.gemspec
@@ -28,13 +28,20 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = '>= 2.5'
 
-  spec.add_dependency 'activejob', '>= 4.2', '< 8.1'
+  spec.add_dependency 'activejob', '>= 4.2', '< 8.2'
+  spec.add_dependency 'activesupport', '>= 4.2', '< 8.2'
   spec.add_dependency 'redlock', '>= 2.0', '< 3'
 
+  spec.add_development_dependency 'mutex_m'
+  spec.add_development_dependency 'bigdecimal'
+  spec.add_development_dependency 'logger'
+  spec.add_development_dependency 'base64'
   spec.add_development_dependency 'appraisal', '~> 2.3.0'
   spec.add_development_dependency 'bundler', '>= 2.0'
   spec.add_development_dependency 'pry-byebug', '> 3.6.0'
   spec.add_development_dependency 'rspec', '~> 3.0'
   spec.add_development_dependency 'rubocop', '~> 1.28'
-  spec.add_development_dependency 'rubocop-rspec', '~> 2.10'
+  spec.add_development_dependency 'rubocop-rspec', '~> 3.7'
+  spec.add_development_dependency 'readline'
+  spec.add_development_dependency 'irb'
 end
diff --git a/gemfiles/activejob_6.0.x.gemfile b/gemfiles/activejob_6.0.x.gemfile
index 7b671fa..6778133 100644
--- a/gemfiles/activejob_6.0.x.gemfile
+++ b/gemfiles/activejob_6.0.x.gemfile
@@ -2,6 +2,6 @@
 
 source "https://rubygems.org"
 
-gem "activejob", "~> 6.0.5"
+gem "activejob", "~> 6.0.6"
 
 gemspec path: "../"
diff --git a/gemfiles/activejob_6.1.x.gemfile b/gemfiles/activejob_6.1.x.gemfile
index 13ddff7..58a1d5f 100644
--- a/gemfiles/activejob_6.1.x.gemfile
+++ b/gemfiles/activejob_6.1.x.gemfile
@@ -2,6 +2,6 @@
 
 source "https://rubygems.org"
 
-gem "activejob", "~> 6.1.6"
+gem "activejob", "~> 6.1.7"
 
 gemspec path: "../"
diff --git a/gemfiles/activejob_7.0.x.gemfile b/gemfiles/activejob_7.0.x.gemfile
index 014c658..bc33c70 100644
--- a/gemfiles/activejob_7.0.x.gemfile
+++ b/gemfiles/activejob_7.0.x.gemfile
@@ -2,6 +2,6 @@
 
 source "https://rubygems.org"
 
-gem "activejob", "~> 7.0.3"
+gem "activejob", "~> 7.0.8"
 
 gemspec path: "../"
diff --git a/gemfiles/activejob_8.1.x.gemfile b/gemfiles/activejob_8.1.x.gemfile
new file mode 100644
index 0000000..4a5f960
--- /dev/null
+++ b/gemfiles/activejob_8.1.x.gemfile
@@ -0,0 +1,7 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "activejob", ">= 8.1.0.rc1", "< 8.2"
+
+gemspec path: "../"
diff --git a/gemfiles/sidekiq_7.x.gemfile b/gemfiles/sidekiq_7.x.gemfile
index efa4846..abf23af 100644
--- a/gemfiles/sidekiq_7.x.gemfile
+++ b/gemfiles/sidekiq_7.x.gemfile
@@ -2,6 +2,6 @@
 
 source "https://rubygems.org"
 
-gem "sidekiq", "~> 7.0"
+gem "sidekiq", "~> 7.0", "!= 7.3.9"
 
 gemspec path: "../"
diff --git a/lib/active_job/uniqueness.rb b/lib/active_job/uniqueness.rb
index 286bfb6..a0ad6d1 100644
--- a/lib/active_job/uniqueness.rb
+++ b/lib/active_job/uniqueness.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require 'logger'
+
 require 'active_job'
 require 'redlock'
 
diff --git a/lib/active_job/uniqueness/configuration.rb b/lib/active_job/uniqueness/configuration.rb
index 357b92d..a78a780 100644
--- a/lib/active_job/uniqueness/configuration.rb
+++ b/lib/active_job/uniqueness/configuration.rb
@@ -1,52 +1,54 @@
 # frozen_string_literal: true
 
+require 'openssl'
+
 module ActiveJob
   module Uniqueness
-    # Use /config/initializer/activejob_uniqueness.rb to configure ActiveJob::Uniqueness
+    # Use config/initializer/activejob_uniqueness.rb to configure ActiveJob::Uniqueness
     #
     # ActiveJob::Uniqueness.configure do |c|
     #   c.lock_ttl = 3.hours
     # end
     #
     class Configuration
-      include ActiveSupport::Configurable
-
-      config_accessor(:lock_ttl) { 86_400 } # 1.day
-      config_accessor(:lock_prefix) { 'activejob_uniqueness' }
-      config_accessor(:on_conflict) { :raise }
-      config_accessor(:on_redis_connection_error) { :raise }
-      config_accessor(:redlock_servers) { [ENV.fetch('REDIS_URL', 'redis://localhost:6379')] }
-      config_accessor(:redlock_options) { { retry_count: 0 } }
-      config_accessor(:lock_strategies) { {} }
-
-      config_accessor(:digest_method) do
-        require 'openssl'
-        OpenSSL::Digest::MD5
-      end
+      module Validations
+        def on_conflict=(action)
+          validate_on_conflict_action!(action)
 
-      def on_conflict=(action)
-        validate_on_conflict_action!(action)
+          super
+        end
 
-        config.on_conflict = action
-      end
+        def validate_on_conflict_action!(action)
+          return if action.nil? || %i[log raise].include?(action) || action.respond_to?(:call)
 
-      def validate_on_conflict_action!(action)
-        return if action.nil? || %i[log raise].include?(action) || action.respond_to?(:call)
+          raise ActiveJob::Uniqueness::InvalidOnConflictAction, "Unexpected '#{action}' action on conflict"
+        end
 
-        raise ActiveJob::Uniqueness::InvalidOnConflictAction, "Unexpected '#{action}' action on conflict"
-      end
+        def on_redis_connection_error=(action)
+          validate_on_redis_connection_error!(action)
 
-      def on_redis_connection_error=(action)
-        validate_on_redis_connection_error!(action)
+          super
+        end
 
-        config.on_redis_connection_error = action
+        def validate_on_redis_connection_error!(action)
+          return if action.nil? || action == :raise || action.respond_to?(:call)
+
+          raise ActiveJob::Uniqueness::InvalidOnConflictAction,
+                "Unexpected '#{action}' action on_redis_connection_error"
+        end
       end
 
-      def validate_on_redis_connection_error!(action)
-        return if action.nil? || action == :raise || action.respond_to?(:call)
+      class_attribute :lock_ttl, default: 86_400
+      class_attribute :lock_prefix, default: 'activejob_uniqueness'
+      class_attribute :on_conflict, default: :raise
+      class_attribute :on_redis_connection_error, default: :raise
+      class_attribute :redlock_servers, default: [ENV.fetch('REDIS_URL', 'redis://localhost:6379')]
+      class_attribute :redlock_options, default: { retry_count: 0 }
+      class_attribute :lock_strategies, default: {}
 
-        raise ActiveJob::Uniqueness::InvalidOnConflictAction, "Unexpected '#{action}' action on_redis_connection_error"
-      end
+      class_attribute :digest_method, default: OpenSSL::Digest::MD5
+
+      prepend Validations
     end
   end
 end