diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2fcb36a..f3ecda6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,7 +10,7 @@ env:
   PGUSER: postgres
   PGPASSWORD: postgres
   TESTOPTS: "--fail-fast"
-          
+
 jobs:
   lint:
     name: "Lint"
@@ -24,7 +24,7 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.2.2
+          ruby-version: 3.4.7
           bundler-cache: true
 
       - name: Lint code for consistent style
@@ -53,7 +53,7 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.2.2
+          ruby-version: 3.4.7
           bundler-cache: true
 
       - name: Run tests
@@ -82,8 +82,37 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.2.2
+          ruby-version: 3.4.7
           bundler-cache: true
 
       - name: Run tests
-        run: bundle exec rake
\ No newline at end of file
+        run: bundle exec rake
+
+  test_rails_8_1:
+    name: "Tests (Rails 8.1)"
+    runs-on: ubuntu-latest
+    services:
+      postgres:
+        image: postgres
+        env:
+          POSTGRES_PASSWORD: postgres
+        options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
+        ports:
+          - 5432:5432
+    env:
+      BUNDLE_GEMFILE: ${{ github.workspace }}/gemfiles/rails_8_1.gemfile
+    steps:
+      - name: Install packages
+        run: sudo apt-get update && sudo apt-get install --no-install-recommends -y curl libjemalloc2
+
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: 3.4.7
+          bundler-cache: true
+
+      - name: Run tests
+        run: bundle exec rake
diff --git a/.ruby-version b/.ruby-version
index be94e6f..2aa5131 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.2.2
+3.4.7
diff --git a/Appraisals b/Appraisals
index 0896b06..7bcac9c 100644
--- a/Appraisals
+++ b/Appraisals
@@ -7,3 +7,8 @@ appraise "rails-8" do
   gem "rails", ">= 8.0"
   gem "async", "~> 2.25"
 end
+
+appraise "rails-8-1" do
+  gem "rails", ">= 8.1"
+  gem "async", "~> 2.25"
+end
diff --git a/Gemfile b/Gemfile
index 4c9d979..33bfe57 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,3 +7,4 @@ gem "standard", require: false
 gem "rake", "~> 13.0"
 gem "minitest", "~> 5.0"
 gem "async", "~> 2.25"
+gem "csv" # Used to be in stdlib
diff --git a/gemfiles/.bundle/config b/gemfiles/.bundle/config
new file mode 100644
index 0000000..c127f80
--- /dev/null
+++ b/gemfiles/.bundle/config
@@ -0,0 +1,2 @@
+---
+BUNDLE_RETRY: "1"
diff --git a/gemfiles/rails_7.gemfile b/gemfiles/rails_7.gemfile
index 4b27ad4..675762f 100644
--- a/gemfiles/rails_7.gemfile
+++ b/gemfiles/rails_7.gemfile
@@ -6,6 +6,7 @@ gem "standard", require: false
 gem "rake", "~> 13.0"
 gem "minitest", "~> 5.0"
 gem "async", "~> 2.25"
+gem "csv"
 gem "rails", "< 8.0"
 
 gemspec path: "../"
diff --git a/gemfiles/rails_7.gemfile.lock b/gemfiles/rails_7.gemfile.lock
index c5a9549..f92b9cd 100644
--- a/gemfiles/rails_7.gemfile.lock
+++ b/gemfiles/rails_7.gemfile.lock
@@ -106,6 +106,7 @@ GEM
       fiber-local (~> 1.1)
       json
     crass (1.0.6)
+    csv (3.3.5)
     date (3.4.1)
     debug (1.10.0)
       irb (~> 1.10)
@@ -278,6 +279,7 @@ PLATFORMS
 DEPENDENCIES
   appraisal
   async (~> 2.25)
+  csv
   debug
   gouda!
   minitest (~> 5.0)
diff --git a/gemfiles/rails_8.gemfile b/gemfiles/rails_8.gemfile
index df119ef..3fd3b21 100644
--- a/gemfiles/rails_8.gemfile
+++ b/gemfiles/rails_8.gemfile
@@ -6,6 +6,7 @@ gem "standard", require: false
 gem "rake", "~> 13.0"
 gem "minitest", "~> 5.0"
 gem "async", "~> 2.25"
+gem "csv"
 gem "rails", ">= 8.0"
 
 gemspec path: "../"
diff --git a/gemfiles/rails_8.gemfile.lock b/gemfiles/rails_8.gemfile.lock
index 391bdd9..c22ac51 100644
--- a/gemfiles/rails_8.gemfile.lock
+++ b/gemfiles/rails_8.gemfile.lock
@@ -106,6 +106,7 @@ GEM
       fiber-local (~> 1.1)
       json
     crass (1.0.6)
+    csv (3.3.5)
     date (3.4.1)
     debug (1.10.0)
       irb (~> 1.10)
@@ -279,6 +280,7 @@ PLATFORMS
 DEPENDENCIES
   appraisal
   async (~> 2.25)
+  csv
   debug
   gouda!
   minitest (~> 5.0)
diff --git a/gemfiles/rails_8_1.gemfile b/gemfiles/rails_8_1.gemfile
new file mode 100644
index 0000000..3f20560
--- /dev/null
+++ b/gemfiles/rails_8_1.gemfile
@@ -0,0 +1,12 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "standard", require: false
+gem "rake", "~> 13.0"
+gem "minitest", "~> 5.0"
+gem "async", "~> 2.25"
+gem "csv"
+gem "rails", ">= 8.1"
+
+gemspec path: "../"
diff --git a/gemfiles/rails_8_1.gemfile.lock b/gemfiles/rails_8_1.gemfile.lock
new file mode 100644
index 0000000..a15bde4
--- /dev/null
+++ b/gemfiles/rails_8_1.gemfile.lock
@@ -0,0 +1,303 @@
+PATH
+  remote: ..
+  specs:
+    gouda (0.2.0)
+      activejob (>= 7.2.0)
+      activerecord (>= 7.2.0)
+      activesupport (>= 7.2.0)
+      async (~> 2.25)
+      fugit (~> 1.10)
+      railties (>= 7.2.0)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    action_text-trix (2.1.15)
+      railties
+    actioncable (8.1.1)
+      actionpack (= 8.1.1)
+      activesupport (= 8.1.1)
+      nio4r (~> 2.0)
+      websocket-driver (>= 0.6.1)
+      zeitwerk (~> 2.6)
+    actionmailbox (8.1.1)
+      actionpack (= 8.1.1)
+      activejob (= 8.1.1)
+      activerecord (= 8.1.1)
+      activestorage (= 8.1.1)
+      activesupport (= 8.1.1)
+      mail (>= 2.8.0)
+    actionmailer (8.1.1)
+      actionpack (= 8.1.1)
+      actionview (= 8.1.1)
+      activejob (= 8.1.1)
+      activesupport (= 8.1.1)
+      mail (>= 2.8.0)
+      rails-dom-testing (~> 2.2)
+    actionpack (8.1.1)
+      actionview (= 8.1.1)
+      activesupport (= 8.1.1)
+      nokogiri (>= 1.8.5)
+      rack (>= 2.2.4)
+      rack-session (>= 1.0.1)
+      rack-test (>= 0.6.3)
+      rails-dom-testing (~> 2.2)
+      rails-html-sanitizer (~> 1.6)
+      useragent (~> 0.16)
+    actiontext (8.1.1)
+      action_text-trix (~> 2.1.15)
+      actionpack (= 8.1.1)
+      activerecord (= 8.1.1)
+      activestorage (= 8.1.1)
+      activesupport (= 8.1.1)
+      globalid (>= 0.6.0)
+      nokogiri (>= 1.8.5)
+    actionview (8.1.1)
+      activesupport (= 8.1.1)
+      builder (~> 3.1)
+      erubi (~> 1.11)
+      rails-dom-testing (~> 2.2)
+      rails-html-sanitizer (~> 1.6)
+    activejob (8.1.1)
+      activesupport (= 8.1.1)
+      globalid (>= 0.3.6)
+    activemodel (8.1.1)
+      activesupport (= 8.1.1)
+    activerecord (8.1.1)
+      activemodel (= 8.1.1)
+      activesupport (= 8.1.1)
+      timeout (>= 0.4.0)
+    activestorage (8.1.1)
+      actionpack (= 8.1.1)
+      activejob (= 8.1.1)
+      activerecord (= 8.1.1)
+      activesupport (= 8.1.1)
+      marcel (~> 1.0)
+    activesupport (8.1.1)
+      base64
+      bigdecimal
+      concurrent-ruby (~> 1.0, >= 1.3.1)
+      connection_pool (>= 2.2.5)
+      drb
+      i18n (>= 1.6, < 2)
+      json
+      logger (>= 1.4.2)
+      minitest (>= 5.1)
+      securerandom (>= 0.3)
+      tzinfo (~> 2.0, >= 2.0.5)
+      uri (>= 0.13.1)
+    appraisal (2.5.0)
+      bundler
+      rake
+      thor (>= 0.14.0)
+    ast (2.4.3)
+    async (2.34.0)
+      console (~> 1.29)
+      fiber-annotation
+      io-event (~> 1.11)
+      metrics (~> 0.12)
+      traces (~> 0.18)
+    base64 (0.3.0)
+    bigdecimal (3.3.1)
+    builder (3.3.0)
+    coderay (1.1.3)
+    concurrent-ruby (1.3.5)
+    connection_pool (2.5.4)
+    console (1.34.2)
+      fiber-annotation
+      fiber-local (~> 1.1)
+      json
+    crass (1.0.6)
+    csv (3.3.5)
+    date (3.5.0)
+    debug (1.11.0)
+      irb (~> 1.10)
+      reline (>= 0.3.8)
+    drb (2.2.3)
+    erb (5.1.3)
+    erubi (1.13.1)
+    et-orbi (1.4.0)
+      tzinfo
+    fiber-annotation (0.2.0)
+    fiber-local (1.1.0)
+      fiber-storage
+    fiber-storage (1.0.1)
+    fugit (1.12.1)
+      et-orbi (~> 1.4)
+      raabro (~> 1.4)
+    globalid (1.3.0)
+      activesupport (>= 6.1)
+    i18n (1.14.7)
+      concurrent-ruby (~> 1.0)
+    io-console (0.8.1)
+    io-event (1.11.2)
+    irb (1.15.2)
+      pp (>= 0.6.0)
+      rdoc (>= 4.0.0)
+      reline (>= 0.4.2)
+    json (2.15.2)
+    language_server-protocol (3.17.0.5)
+    lint_roller (1.1.0)
+    logger (1.7.0)
+    loofah (2.24.1)
+      crass (~> 1.0.2)
+      nokogiri (>= 1.12.0)
+    mail (2.9.0)
+      logger
+      mini_mime (>= 0.1.1)
+      net-imap
+      net-pop
+      net-smtp
+    marcel (1.1.0)
+    method_source (1.1.0)
+    metrics (0.15.0)
+    mini_mime (1.1.5)
+    minitest (5.26.0)
+    net-imap (0.5.12)
+      date
+      net-protocol
+    net-pop (0.1.2)
+      net-protocol
+    net-protocol (0.2.2)
+      timeout
+    net-smtp (0.5.1)
+      net-protocol
+    nio4r (2.7.4)
+    nokogiri (1.18.10-arm64-darwin)
+      racc (~> 1.4)
+    nokogiri (1.18.10-x86_64-linux-gnu)
+      racc (~> 1.4)
+    parallel (1.27.0)
+    parser (3.3.10.0)
+      ast (~> 2.4.1)
+      racc
+    pg (1.6.2-arm64-darwin)
+    pg (1.6.2-x86_64-linux)
+    pp (0.6.3)
+      prettyprint
+    prettyprint (0.2.0)
+    prism (1.6.0)
+    pry (0.15.2)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
+    psych (5.2.6)
+      date
+      stringio
+    raabro (1.4.0)
+    racc (1.8.1)
+    rack (3.2.3)
+    rack-session (2.1.1)
+      base64 (>= 0.1.0)
+      rack (>= 3.0.0)
+    rack-test (2.2.0)
+      rack (>= 1.3)
+    rackup (2.2.1)
+      rack (>= 3)
+    rails (8.1.1)
+      actioncable (= 8.1.1)
+      actionmailbox (= 8.1.1)
+      actionmailer (= 8.1.1)
+      actionpack (= 8.1.1)
+      actiontext (= 8.1.1)
+      actionview (= 8.1.1)
+      activejob (= 8.1.1)
+      activemodel (= 8.1.1)
+      activerecord (= 8.1.1)
+      activestorage (= 8.1.1)
+      activesupport (= 8.1.1)
+      bundler (>= 1.15.0)
+      railties (= 8.1.1)
+    rails-dom-testing (2.3.0)
+      activesupport (>= 5.0.0)
+      minitest
+      nokogiri (>= 1.6)
+    rails-html-sanitizer (1.6.2)
+      loofah (~> 2.21)
+      nokogiri (>= 1.15.7, != 1.16.7, != 1.16.6, != 1.16.5, != 1.16.4, != 1.16.3, != 1.16.2, != 1.16.1, != 1.16.0.rc1, != 1.16.0)
+    railties (8.1.1)
+      actionpack (= 8.1.1)
+      activesupport (= 8.1.1)
+      irb (~> 1.13)
+      rackup (>= 1.0.0)
+      rake (>= 12.2)
+      thor (~> 1.0, >= 1.2.2)
+      tsort (>= 0.2)
+      zeitwerk (~> 2.6)
+    rainbow (3.1.1)
+    rake (13.3.1)
+    rdoc (6.15.0)
+      erb
+      psych (>= 4.0.0)
+      tsort
+    regexp_parser (2.11.3)
+    reline (0.6.2)
+      io-console (~> 0.5)
+    rubocop (1.80.2)
+      json (~> 2.3)
+      language_server-protocol (~> 3.17.0.2)
+      lint_roller (~> 1.1.0)
+      parallel (~> 1.10)
+      parser (>= 3.3.0.2)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 2.9.3, < 3.0)
+      rubocop-ast (>= 1.46.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 2.4.0, < 4.0)
+    rubocop-ast (1.47.1)
+      parser (>= 3.3.7.2)
+      prism (~> 1.4)
+    rubocop-performance (1.25.0)
+      lint_roller (~> 1.1)
+      rubocop (>= 1.75.0, < 2.0)
+      rubocop-ast (>= 1.38.0, < 2.0)
+    ruby-progressbar (1.13.0)
+    securerandom (0.4.1)
+    standard (1.51.1)
+      language_server-protocol (~> 3.17.0.2)
+      lint_roller (~> 1.0)
+      rubocop (~> 1.80.2)
+      standard-custom (~> 1.0.0)
+      standard-performance (~> 1.8)
+    standard-custom (1.0.2)
+      lint_roller (~> 1.0)
+      rubocop (~> 1.50)
+    standard-performance (1.8.0)
+      lint_roller (~> 1.1)
+      rubocop-performance (~> 1.25.0)
+    stringio (3.1.7)
+    thor (1.4.0)
+    timeout (0.4.4)
+    traces (0.18.2)
+    tsort (0.2.0)
+    tzinfo (2.0.6)
+      concurrent-ruby (~> 1.0)
+    unicode-display_width (3.2.0)
+      unicode-emoji (~> 4.1)
+    unicode-emoji (4.1.0)
+    uri (1.0.4)
+    useragent (0.16.11)
+    websocket-driver (0.8.0)
+      base64
+      websocket-extensions (>= 0.1.0)
+    websocket-extensions (0.1.5)
+    zeitwerk (2.7.3)
+
+PLATFORMS
+  arm64-darwin-23
+  x86_64-linux
+
+DEPENDENCIES
+  appraisal
+  async (~> 2.25)
+  csv
+  debug
+  gouda!
+  minitest (~> 5.0)
+  pg
+  pry
+  rails (>= 8.1)
+  rake (~> 13.0)
+  standard
+
+BUNDLED WITH
+   2.4.21
diff --git a/gouda.gemspec b/gouda.gemspec
index 53e33a2..1a37be6 100644
--- a/gouda.gemspec
+++ b/gouda.gemspec
@@ -28,7 +28,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency "fugit", "~> 1.10"
   spec.add_dependency "async", "~> 2.25"
 
-  spec.add_development_dependency "standard"
+  # spec.add_development_dependency "standard"
   spec.add_development_dependency "pg"
   spec.add_development_dependency "debug"
   spec.add_development_dependency "pry"
diff --git a/test/gouda/concurrency_extension_test.rb b/test/gouda/concurrency_extension_test.rb
index 528ec5d..91119a9 100644
--- a/test/gouda/concurrency_extension_test.rb
+++ b/test/gouda/concurrency_extension_test.rb
@@ -4,6 +4,7 @@
 
 class GoudaConcurrencyExtensionTest < ActiveSupport::TestCase
   include AssertHelper
+
   class TestJobWithoutConcurrency < ActiveJob::Base
     self.queue_adapter = Gouda::Adapter.new
   end
@@ -11,6 +12,7 @@ class TestJobWithoutConcurrency < ActiveJob::Base
   class TestJobWithPerformConcurrency < ActiveJob::Base
     self.queue_adapter = Gouda::Adapter.new
     include Gouda::ActiveJobExtensions::Concurrency
+
     gouda_control_concurrency_with(perform_limit: 1)
 
     def perform(*args)
@@ -42,6 +44,7 @@ def perform(*args)
   class TestJobWithCommonConcurrency < ActiveJob::Base
     self.queue_adapter = Gouda::Adapter.new
     include Gouda::ActiveJobExtensions::Concurrency
+
     gouda_control_concurrency_with(total_limit: 1)
 
     def perform(*args)
@@ -79,6 +82,7 @@ def perform(*args)
   class TestJobWithEnqueueConcurrency < ActiveJob::Base
     self.queue_adapter = Gouda::Adapter.new
     include Gouda::ActiveJobExtensions::Concurrency
+
     gouda_control_concurrency_with(enqueue_limit: 1)
 
     def perform(*args)
@@ -105,6 +109,7 @@ def perform(*args)
   class TestJobWithCustomKey < ActiveJob::Base
     self.queue_adapter = Gouda::Adapter.new
     include Gouda::ActiveJobExtensions::Concurrency
+
     gouda_control_concurrency_with total_limit: 1, key: "42"
   end
 
@@ -117,6 +122,7 @@ class TestJobWithCustomKey < ActiveJob::Base
   class TestJobWithCustomKeyProc < ActiveJob::Base
     self.queue_adapter = Gouda::Adapter.new
     include Gouda::ActiveJobExtensions::Concurrency
+
     gouda_control_concurrency_with total_limit: 1, key: -> { @ivar }
 
     def initialize(...)
diff --git a/test/gouda/gouda_test.rb b/test/gouda/gouda_test.rb
index 561773a..e91b1de 100644
--- a/test/gouda/gouda_test.rb
+++ b/test/gouda/gouda_test.rb
@@ -58,6 +58,7 @@ def enqueue_concurrency_key
 
   class JobWithEnqueueConcurrencyViaGoudaAndEnqueueLimit < GoudaTestJob
     include Gouda::ActiveJobExtensions::Concurrency
+
     gouda_control_concurrency_with(enqueue_limit: 1, key: -> { self.class.to_s })
     def perform
       "perform result of #{self.class}"
@@ -66,6 +67,7 @@ def perform
 
   class JobWithEnqueueConcurrencyViaGoudaAndTotalLimit < GoudaTestJob
     include Gouda::ActiveJobExtensions::Concurrency
+
     gouda_control_concurrency_with(total_limit: 1, key: -> { self.class.to_s })
     def perform
       "perform result of #{self.class}"
@@ -84,6 +86,7 @@ def execution_concurrency_key
 
   class JobWithExecutionConcurrencyViaGoudaAndTotalLimit < GoudaTestJob
     include Gouda::ActiveJobExtensions::Concurrency
+
     gouda_control_concurrency_with(total_limit: 1, key: -> { self.class.to_s })
     def perform
       "perform result of #{self.class}"
@@ -92,6 +95,7 @@ def perform
 
   class JobWithExecutionConcurrencyViaGoudaAndPerformLimit < GoudaTestJob
     include Gouda::ActiveJobExtensions::Concurrency
+
     gouda_control_concurrency_with(perform_limit: 1, key: -> { self.class.to_s })
     def perform
       "perform result of #{self.class}"
diff --git a/test/gouda/scheduler_test.rb b/test/gouda/scheduler_test.rb
index 937145b..cb9c8c1 100644
--- a/test/gouda/scheduler_test.rb
+++ b/test/gouda/scheduler_test.rb
@@ -19,6 +19,7 @@ def perform(regular = "ok", mandatory:, optional: "hidden")
 
   class FailingJob < ActiveJob::Base
     include Gouda::ActiveJobExtensions::Concurrency
+
     self.queue_adapter = Gouda::Adapter.new
 
     class MegaError < StandardError