diff --git a/.rubocop.yml b/.rubocop.yml
index 2de8436a0..239564665 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -12,7 +12,7 @@ inherit_mode:
 
 AllCops:
   TargetRubyVersion: 2.5
-  TargetRailsVersion: 5.2
+  TargetRailsVersion: 6.0
   DisplayCopNames: true
   DisplayStyleGuide: true
   Include:
diff --git a/Appraisals b/Appraisals
index 14f8cc7e2..fc27430f2 100644
--- a/Appraisals
+++ b/Appraisals
@@ -1,15 +1,8 @@
 # frozen_string_literal: true
-ruby_2 = Gem::Version.new(RUBY_VERSION) < Gem::Version.new('3')
 ruby_27_or_higher = Gem::Version.new(RUBY_VERSION) >= Gem::Version.new('2.7')
 ruby_31_or_higher = Gem::Version.new(RUBY_VERSION) >= Gem::Version.new('3.1')
 jruby = RUBY_PLATFORM.include?('java')
 
-if ruby_2
-  appraise "rails-5.2" do
-    gem "rails", "~> 5.2.0"
-  end
-end
-
 unless ruby_31_or_higher # https://github.com/rails/rails/issues/44090#issuecomment-1007686519
   appraise "rails-6.0" do
     gem "rails", "~> 6.0.0"
diff --git a/Gemfile.lock b/Gemfile.lock
index 0a7cef8f5..044b92fb4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -12,8 +12,8 @@ PATH
   remote: .
   specs:
     good_job (2.17.1)
-      activejob (>= 5.2.0)
-      activerecord (>= 5.2.0)
+      activejob (>= 6.0.0)
+      activerecord (>= 6.0.0)
       concurrent-ruby (>= 1.0.2)
       fugit (>= 1.1)
       railties (>= 5.2.0)
@@ -73,11 +73,6 @@ GEM
     activerecord-explain-analyze (0.1.0)
       activerecord (>= 4)
       pg
-    activerecord-jdbc-adapter (61.2-java)
-      activerecord (~> 6.1.0)
-    activerecord-jdbcpostgresql-adapter (61.2-java)
-      activerecord-jdbc-adapter (= 61.2)
-      jdbc-postgres (>= 9.4, < 43)
     activestorage (6.1.5.1)
       actionpack (= 6.1.5.1)
       activejob (= 6.1.5.1)
@@ -187,7 +182,6 @@ GEM
     faraday-rack (1.0.0)
     faraday-retry (1.0.3)
     ffi (1.15.5)
-    ffi (1.15.5-java)
     fiber-local (1.0.0)
     foreman (0.87.2)
     fugit (1.5.3)
@@ -220,7 +214,6 @@ GEM
       rails-i18n
       rainbow (>= 2.2.2, < 4.0)
       terminal-table (>= 1.5.1)
-    jdbc-postgres (42.2.25)
     kramdown (2.4.0)
       rexml
     kramdown-parser-gfm (1.1.0)
@@ -252,12 +245,9 @@ GEM
     multi_json (1.15.0)
     multipart-post (2.1.1)
     nio4r (2.5.8)
-    nio4r (2.5.8-java)
     nokogiri (1.12.5)
       mini_portile2 (~> 2.6.1)
       racc (~> 1.4)
-    nokogiri (1.12.5-java)
-      racc (~> 1.4)
     octokit (4.22.0)
       faraday (>= 0.9)
       sawyer (~> 0.8.0, >= 0.5.3)
@@ -276,10 +266,6 @@ GEM
     pry (0.13.1)
       coderay (~> 1.1)
       method_source (~> 1.0)
-    pry (0.13.1-java)
-      coderay (~> 1.1)
-      method_source (~> 1.0)
-      spoon (~> 0.0)
     pry-byebug (3.9.0)
       byebug (~> 11.0)
       pry (~> 0.13.0)
@@ -288,11 +274,8 @@ GEM
     public_suffix (4.0.7)
     puma (5.6.4)
       nio4r (~> 2.0)
-    puma (5.6.4-java)
-      nio4r (~> 2.0)
     raabro (1.4.0)
     racc (1.6.0)
-    racc (1.6.0-java)
     rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -381,8 +364,6 @@ GEM
       rubyzip (>= 1.2.2)
     sigdump (0.2.4)
     smart_properties (1.17.0)
-    spoon (0.0.6)
-      ffi
     sprockets (4.0.3)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
@@ -403,8 +384,6 @@ GEM
     webrick (1.7.0)
     websocket-driver (0.7.5)
       websocket-extensions (>= 0.1.0)
-    websocket-driver (0.7.5-java)
-      websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
     xpath (3.2.0)
       nokogiri (~> 1.8)
diff --git a/app/views/layouts/good_job/application.html.erb b/app/views/layouts/good_job/application.html.erb
index a4703752d..4911ae785 100644
--- a/app/views/layouts/good_job/application.html.erb
+++ b/app/views/layouts/good_job/application.html.erb
@@ -16,7 +16,7 @@
   <%= tag.script "", src: rails_ujs_path(format: :js, v: GoodJob::VERSION, locale: nil), nonce: content_security_policy_nonce %>
 
   <%= tag.script "", src: es_module_shims_path(format: :js, v: GoodJob::VERSION, locale: nil), async: true, nonce: content_security_policy_nonce %>
-  <% importmaps = { imports: GoodJob::AssetsController.js_modules.keys.each_with_object({}) { |module_name, imports| imports[module_name] = modules_path(module_name, format: :js, locale: nil, v: GoodJob::VERSION) } } %>
+  <% importmaps = { imports: GoodJob::AssetsController.js_modules.keys.index_with { |module_name| modules_path(module_name, format: :js, locale: nil, v: GoodJob::VERSION) } } %>
   <%= tag.script importmaps.to_json.html_safe, type: "importmap", nonce: content_security_policy_nonce %>
   <%= tag.script "", src: scripts_path(format: :js, v: GoodJob::VERSION, locale: nil), type: "module", nonce: content_security_policy_nonce %>
 </head>
diff --git a/gemfiles/rails_5.2.gemfile b/gemfiles/rails_5.2.gemfile
deleted file mode 100644
index 5ab936c8e..000000000
--- a/gemfiles/rails_5.2.gemfile
+++ /dev/null
@@ -1,29 +0,0 @@
-# This file was generated by Appraisal
-
-source "https://rubygems.org"
-
-gem "activerecord-jdbcpostgresql-adapter", platforms: [:jruby]
-gem "appraisal", branch: "fix-bundle-env", git: "https://github.com/bensheldon/appraisal.git"
-gem "nokogiri", "~> 1.12.0"
-gem "pg", platforms: [:mri, :mingw, :x64_mingw]
-gem "rails", "~> 5.2.0"
-
-platforms :ruby do
-  gem "activerecord-explain-analyze"
-  gem "memory_profiler"
-  gem "pry-byebug"
-  gem "rbtrace"
-
-  group :lint do
-    gem "easy_translate"
-    gem "erb_lint", ">= 0.0.35"
-    gem "i18n-tasks"
-    gem "mdl"
-    gem "rubocop"
-    gem "rubocop-performance"
-    gem "rubocop-rails"
-    gem "rubocop-rspec"
-  end
-end
-
-gemspec path: "../"
diff --git a/good_job.gemspec b/good_job.gemspec
index 74975b516..51eaba704 100644
--- a/good_job.gemspec
+++ b/good_job.gemspec
@@ -50,8 +50,8 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = ">= 2.5.0"
 
-  spec.add_dependency "activejob", ">= 5.2.0"
-  spec.add_dependency "activerecord", ">= 5.2.0"
+  spec.add_dependency "activejob", ">= 6.0.0"
+  spec.add_dependency "activerecord", ">= 6.0.0"
   spec.add_dependency "concurrent-ruby", ">= 1.0.2"
   spec.add_dependency "fugit", ">= 1.1"
   spec.add_dependency "railties", ">= 5.2.0"
diff --git a/lib/good_job/current_thread.rb b/lib/good_job/current_thread.rb
index 226812db7..4c3c22f4f 100644
--- a/lib/good_job/current_thread.rb
+++ b/lib/good_job/current_thread.rb
@@ -56,8 +56,8 @@ def self.reset(values = {})
     # Exports values to hash
     # @return [Hash]
     def self.to_h
-      ACCESSORS.each_with_object({}) do |accessor, hash|
-        hash[accessor] = send(accessor)
+      ACCESSORS.index_with do |accessor|
+        send(accessor)
       end
     end
 
diff --git a/spec/lib/good_job/execution_spec.rb b/spec/lib/good_job/execution_spec.rb
index 622643d55..14f91e07f 100644
--- a/spec/lib/good_job/execution_spec.rb
+++ b/spec/lib/good_job/execution_spec.rb
@@ -287,32 +287,29 @@ def perform(result_value = nil, raise_error: false)
             expect(result.unhandled_error).to be_an_instance_of TestJob::ExpectedError
           end
 
-          if Gem::Version.new(Rails.version) > Gem::Version.new("6")
-            # Necessary instrumentation was added in Rails 6.0
-            context 'when retry_on is used' do
-              before do
-                TestJob.retry_on(StandardError, wait: 0, attempts: Float::INFINITY) { nil }
-              end
-
-              it 'returns the error' do
-                result = good_job.perform
-
-                expect(result.value).to be_nil
-                expect(result.handled_error).to be_an_instance_of TestJob::ExpectedError
-              end
+          context 'when retry_on is used' do
+            before do
+              TestJob.retry_on(StandardError, wait: 0, attempts: Float::INFINITY) { nil }
             end
 
-            context 'when discard_on is used' do
-              before do
-                TestJob.discard_on(StandardError) { nil }
-              end
+            it 'returns the error' do
+              result = good_job.perform
 
-              it 'returns the error' do
-                result = good_job.perform
+              expect(result.value).to be_nil
+              expect(result.handled_error).to be_an_instance_of TestJob::ExpectedError
+            end
+          end
+
+          context 'when discard_on is used' do
+            before do
+              TestJob.discard_on(StandardError) { nil }
+            end
+
+            it 'returns the error' do
+              result = good_job.perform
 
-                expect(result.value).to be_nil
-                expect(result.handled_error).to be_an_instance_of TestJob::ExpectedError
-              end
+              expect(result.value).to be_nil
+              expect(result.handled_error).to be_an_instance_of TestJob::ExpectedError
             end
           end
         end