diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 432e09a4..6e9cdf84 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,6 +18,7 @@ jobs:
           - rails60
           - rails61
           - rails70
+          - rails71
         db: [POSTGRES, MYSQL, SQLITE]
         exclude:
           # MySQL has issues on Ruby 2.3
@@ -96,6 +97,16 @@ jobs:
           - appraisal: rails70
             ruby: 2.6
 
+          # Rails 7.1 supports Ruby 2.7+
+          - appraisal: rails71
+            ruby: 2.3
+          - appraisal: rails71
+            ruby: 2.4
+          - appraisal: rails71
+            ruby: 2.5
+          - appraisal: rails71
+            ruby: 2.6
+
     services:
       postgres:
         image: postgres
diff --git a/Appraisals b/Appraisals
index e41dacfa..e724b7b4 100644
--- a/Appraisals
+++ b/Appraisals
@@ -7,6 +7,7 @@ appraise "rails50" do
   gem "pg", ">= 0.18", "< 2.0"
   gem "sqlite3", "~> 1.3.6"
   gem "psych", "~> 3.1"
+  gem "loofah", "2.20.0"
 end
 
 appraise "rails51" do
@@ -15,6 +16,7 @@ appraise "rails51" do
   gem "pg", ">= 0.18", "< 2.0"
   gem "sqlite3", "~> 1.3.6"
   gem "psych", "~> 3.1"
+  gem "loofah", "2.20.0"
 end
 
 appraise "rails52" do
@@ -23,6 +25,7 @@ appraise "rails52" do
   gem "pg", ">= 0.18", "< 2.0"
   gem "sqlite3", "~> 1.3.6"
   gem "psych", "~> 3.1"
+  gem "loofah", "2.20.0"
 end
 
 appraise "rails60" do
@@ -45,3 +48,10 @@ appraise "rails70" do
   gem "pg", ">= 1.1"
   gem "sqlite3", ">= 1.4"
 end
+
+appraise "rails71" do
+  gem "rails", ">= 7.1.0.beta1", "< 7.2"
+  gem "mysql2", ">= 0.4.4"
+  gem "pg", ">= 1.1"
+  gem "sqlite3", ">= 1.4"
+end
diff --git a/audited.gemspec b/audited.gemspec
index fdcf636e..74638004 100644
--- a/audited.gemspec
+++ b/audited.gemspec
@@ -16,7 +16,7 @@ Gem::Specification.new do |gem|
 
   gem.required_ruby_version = ">= 2.3.0"
 
-  gem.add_dependency "activerecord", ">= 5.0", "< 7.1"
+  gem.add_dependency "activerecord", ">= 5.0", "< 7.2"
   gem.add_dependency "request_store", "~> 1.2"
 
   gem.add_development_dependency "appraisal"
diff --git a/gemfiles/rails50.gemfile b/gemfiles/rails50.gemfile
index 250ead6a..92d5f8c4 100644
--- a/gemfiles/rails50.gemfile
+++ b/gemfiles/rails50.gemfile
@@ -7,5 +7,6 @@ gem "mysql2", ">= 0.3.18", "< 0.6.0"
 gem "pg", ">= 0.18", "< 2.0"
 gem "sqlite3", "~> 1.3.6"
 gem "psych", "~> 3.1"
+gem "loofah", "2.20.0"
 
 gemspec name: "audited", path: "../"
diff --git a/gemfiles/rails51.gemfile b/gemfiles/rails51.gemfile
index 40dc0bae..fa43c66f 100644
--- a/gemfiles/rails51.gemfile
+++ b/gemfiles/rails51.gemfile
@@ -7,5 +7,6 @@ gem "mysql2", ">= 0.3.18", "< 0.6.0"
 gem "pg", ">= 0.18", "< 2.0"
 gem "sqlite3", "~> 1.3.6"
 gem "psych", "~> 3.1"
+gem "loofah", "2.20.0"
 
 gemspec name: "audited", path: "../"
diff --git a/gemfiles/rails52.gemfile b/gemfiles/rails52.gemfile
index 9bbc2592..b8d7a12b 100644
--- a/gemfiles/rails52.gemfile
+++ b/gemfiles/rails52.gemfile
@@ -7,5 +7,6 @@ gem "mysql2", ">= 0.4.4", "< 0.6.0"
 gem "pg", ">= 0.18", "< 2.0"
 gem "sqlite3", "~> 1.3.6"
 gem "psych", "~> 3.1"
+gem "loofah", "2.20.0"
 
 gemspec name: "audited", path: "../"
diff --git a/gemfiles/rails71.gemfile b/gemfiles/rails71.gemfile
new file mode 100644
index 00000000..e34fc967
--- /dev/null
+++ b/gemfiles/rails71.gemfile
@@ -0,0 +1,10 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "rails", ">= 7.1.0.beta1", "< 7.2"
+gem "mysql2", ">= 0.4.4"
+gem "pg", ">= 1.1"
+gem "sqlite3", ">= 1.4"
+
+gemspec name: "audited", path: "../"
diff --git a/lib/audited.rb b/lib/audited.rb
index d548711e..7f500d3d 100644
--- a/lib/audited.rb
+++ b/lib/audited.rb
@@ -22,7 +22,8 @@ def audit_class
 
     # remove audit_model in next major version it was only shortly present in 5.1.0
     alias_method :audit_model, :audit_class
-    deprecate audit_model: "use Audited.audit_class instead of Audited.audit_model. This method will be removed."
+    deprecate audit_model: "use Audited.audit_class instead of Audited.audit_model. This method will be removed.",
+              deprecator: ActiveSupport::Deprecation.new('6.0.0', 'Audited')
 
     def store
       RequestStore.store[:audited_store] ||= {}
diff --git a/lib/audited/audit.rb b/lib/audited/audit.rb
index 7201adac..7117d19c 100644
--- a/lib/audited/audit.rb
+++ b/lib/audited/audit.rb
@@ -49,7 +49,11 @@ class Audit < ::ActiveRecord::Base
     cattr_accessor :audited_class_names
     self.audited_class_names = Set.new
 
-    serialize :audited_changes, YAMLIfTextColumnType
+    if Rails.version >= "7.1"
+      serialize :audited_changes, coder: YAMLIfTextColumnType
+    else
+      serialize :audited_changes, YAMLIfTextColumnType
+    end
 
     scope :ascending, -> { reorder(version: :asc) }
     scope :descending, -> { reorder(version: :desc) }
diff --git a/spec/audited/audit_spec.rb b/spec/audited/audit_spec.rb
index 546bbe36..c18abdb5 100644
--- a/spec/audited/audit_spec.rb
+++ b/spec/audited/audit_spec.rb
@@ -1,6 +1,6 @@
 require "spec_helper"
 
-SingleCov.covered! uncovered: 1 # Rails version check
+SingleCov.covered! uncovered: 2 # Rails version check
 
 class CustomAudit < Audited::Audit
   def custom_method
diff --git a/spec/rails_app/config/application.rb b/spec/rails_app/config/application.rb
index 7c2bec71..dca65709 100644
--- a/spec/rails_app/config/application.rb
+++ b/spec/rails_app/config/application.rb
@@ -5,11 +5,34 @@ class Application < Rails::Application
     config.root = File.expand_path("../../", __FILE__)
     config.i18n.enforce_available_locales = true
 
-    if !Rails.version.start_with?("5.0") && !Rails.version.start_with?("5.1") && config.active_record.respond_to?(:yaml_column_permitted_classes=)
+    if Rails.version.start_with?("7.1") && config.active_record.respond_to?(:yaml_column_permitted_classes=)
+      config.active_record.yaml_column_permitted_classes = [
+        String,
+        Symbol,
+        Integer,
+        NilClass,
+        Float,
+        Time,
+        Date,
+        FalseClass,
+        Hash,
+        Array,
+        DateTime,
+        TrueClass,
+        BigDecimal,
+        ActiveSupport::TimeWithZone,
+        ActiveSupport::TimeZone,
+        ActiveSupport::HashWithIndifferentAccess
+      ]
+    elsif !Rails.version.start_with?("5.0") && !Rails.version.start_with?("5.1") && config.active_record.respond_to?(:yaml_column_permitted_classes=)
       config.active_record.yaml_column_permitted_classes =
         %w[String Symbol Integer NilClass Float Time Date FalseClass Hash Array DateTime TrueClass BigDecimal
           ActiveSupport::TimeWithZone ActiveSupport::TimeZone ActiveSupport::HashWithIndifferentAccess]
     end
+
+    if Rails.version >= "7.1"
+      config.active_support.cache_format_version = 7.1
+    end
   end
 end
 
diff --git a/spec/support/active_record/models.rb b/spec/support/active_record/models.rb
index 5c5def30..9acceb43 100644
--- a/spec/support/active_record/models.rb
+++ b/spec/support/active_record/models.rb
@@ -8,7 +8,12 @@ class User < ::ActiveRecord::Base
       attribute :non_column_attr if Rails.version >= "5.1"
       attr_protected :logins if respond_to?(:attr_protected)
       enum status: {active: 0, reliable: 1, banned: 2}
-      serialize :phone_numbers, Array
+
+      if Rails.version >= "7.1"
+        serialize :phone_numbers, type: Array
+      else
+        serialize :phone_numbers, Array
+      end
 
       def name=(val)
         write_attribute(:name, CGI.escapeHTML(val))