diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b6e8e60..11f9c81 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        gemfile: [rails_5_2.gemfile, rails_6_0.gemfile, rails_6_1.gemfile, rails_7_0.gemfile, rails_7_1.gemfile, rails_7_2.gemfile, rails_8_0.gemfile, rails_main.gemfile]
+        gemfile: [rails_5_2.gemfile, rails_6_0.gemfile, rails_6_1.gemfile, rails_7_0.gemfile, rails_7_1.gemfile, rails_7_2.gemfile, rails_8_0.gemfile, rails_8_1.gemfile, rails_main.gemfile]
         ruby_version: ['2.3', '2.4', '2.5', '2.6', '2.7', '3.0', '3.1', '3.2', '3.3', '3.4']
         exclude:
           - gemfile: rails_main.gemfile
@@ -29,6 +29,22 @@ jobs:
             ruby_version: '3.0'
           - gemfile: rails_main.gemfile
             ruby_version: '3.1'
+          - gemfile: rails_main.gemfile
+            ruby_version: '3.2'
+          - gemfile: rails_8_1.gemfile
+            ruby_version: '2.3'
+          - gemfile: rails_8_1.gemfile
+            ruby_version: '2.4'
+          - gemfile: rails_8_1.gemfile
+            ruby_version: '2.5'
+          - gemfile: rails_8_1.gemfile
+            ruby_version: '2.6'
+          - gemfile: rails_8_1.gemfile
+            ruby_version: '2.7'
+          - gemfile: rails_8_1.gemfile
+            ruby_version: '3.0'
+          - gemfile: rails_8_1.gemfile
+            ruby_version: '3.1'
           - gemfile: rails_8_0.gemfile
             ruby_version: '2.3'
           - gemfile: rails_8_0.gemfile
@@ -117,22 +133,9 @@ jobs:
       uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby_version }}
-    - name: Before build
-      run: |
-        sudo apt-get install libsqlite3-dev
-        curl -L https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64 > ./cc-test-reporter
-        chmod +x ./cc-test-reporter
-        ./cc-test-reporter before-build
-      env:
-        CC_TEST_REPORTER_ID: aff2c7b9e07e54d5fc9e5588d2e2a8bab4f69950d35000edc2b6250bbaba477d
     - name: Run test
       run: |
         bundle update
         bundle install --gemfile spec/gemfiles/${{ matrix.gemfile }} --jobs 4 --retry 3
         bundle exec rake code_analysis
         bundle exec rspec
-    - name: Report to CodeClimate
-      run: |
-        ./cc-test-reporter after-build --exit-code 0
-      env:
-        CC_TEST_REPORTER_ID: aff2c7b9e07e54d5fc9e5588d2e2a8bab4f69950d35000edc2b6250bbaba477d
diff --git a/README.md b/README.md
index 95806e0..dbb91d7 100644
--- a/README.md
+++ b/README.md
@@ -5,8 +5,6 @@ YAAF (Yet Another Active Form) is a gem that let you create form objects in an e
 We were going to name this gem `ActiveForm` to follow Rails naming conventions but given there are a lot of form object gems named like that we preferred to go with `YAAF`.
 
 ![CI](https://github.com/rootstrap/yaaf/workflows/CI/badge.svg)
-[![Maintainability](https://api.codeclimate.com/v1/badges/c3dea064e1003b700260/maintainability)](https://codeclimate.com/github/rootstrap/yaaf/maintainability)
-[![Test Coverage](https://api.codeclimate.com/v1/badges/c3dea064e1003b700260/test_coverage)](https://codeclimate.com/github/rootstrap/yaaf/test_coverage)
 
 ## Table of Contents
 
@@ -23,6 +21,7 @@ We were going to name this gem `ActiveForm` to follow Rails naming conventions b
   - [#save!](#save!)
   - [Validations](#validations)
   - [Callbacks](#callbacks)
+  - [Normalizes](#normalizes)
 - [Sample app](#sample-app)
 - [Links](#links)
 - [Development](#development)
@@ -249,6 +248,19 @@ Available callbacks are (listed in execution order):
 - `after_save`
 - `after_commit/after_rollback`
 
+### Normalizes (Rails 8.1+)
+
+`YAAF` form objects support `normalizes` the same way as `ActiveModel` models. For example:
+
+```ruby
+class RegistrationForm < YAAF::Form
+  normalizes :email, with: ->(email) { email.strip.downcase }
+  normalizes :name, with: ->(name) { name.strip.titleize }
+
+  # ...
+end
+```
+
 ## Sample app
 
 You can find a sample app making use of the gem [here](https://yaaf-examples.herokuapp.com). Its code is also open source, and you can find it [here](https://github.com/rootstrap/yaaf-examples).
diff --git a/Rakefile b/Rakefile
index 07fa488..981c803 100644
--- a/Rakefile
+++ b/Rakefile
@@ -2,5 +2,4 @@
 
 task :code_analysis do
   sh 'bundle exec rubocop lib spec'
-  sh 'bundle exec reek lib'
 end
diff --git a/lib/yaaf/form.rb b/lib/yaaf/form.rb
index 8e0417d..b3cf10e 100644
--- a/lib/yaaf/form.rb
+++ b/lib/yaaf/form.rb
@@ -6,6 +6,12 @@ class Form
     include ::ActiveModel::Model
     include ::ActiveModel::Validations::Callbacks
     include ::ActiveRecord::Transactions
+
+    if defined?(::ActiveModel::Attributes::Normalization)
+      include ::ActiveModel::Attributes
+      include ::ActiveModel::Attributes::Normalization
+    end
+
     define_model_callbacks :save
 
     delegate :transaction, to: ::ActiveRecord::Base
diff --git a/spec/gemfiles/rails_8_1.gemfile b/spec/gemfiles/rails_8_1.gemfile
new file mode 100644
index 0000000..63366c8
--- /dev/null
+++ b/spec/gemfiles/rails_8_1.gemfile
@@ -0,0 +1,5 @@
+source 'https://rubygems.org'
+
+gemspec path: '../..'
+
+gem 'rails', '~> 8.1.0'
diff --git a/spec/support/forms.rb b/spec/support/forms.rb
index 42d178c..e8bf235 100644
--- a/spec/support/forms.rb
+++ b/spec/support/forms.rb
@@ -8,3 +8,4 @@
 require_relative 'forms/with_callback_exception_raising'
 require_relative 'forms/custom_transaction_form'
 require_relative 'forms/user_destroy_form'
+require_relative 'forms/with_normalize_form'
diff --git a/spec/support/forms/with_normalize_form.rb b/spec/support/forms/with_normalize_form.rb
new file mode 100644
index 0000000..42b8658
--- /dev/null
+++ b/spec/support/forms/with_normalize_form.rb
@@ -0,0 +1,19 @@
+class WithNormalizeForm < YAAF::Form
+  if defined?(ActiveModel::Attributes::Normalization)
+    attribute :email, :string
+    attribute :name, :string
+
+    normalizes :email, with: ->(email) { email.strip.downcase }
+    normalizes :name, with: ->(name) { name.strip.titleize }
+
+    def initialize(args)
+      super(args)
+
+      @models = [user]
+    end
+
+    def user
+      @user ||= User.new(email: email, name: name)
+    end
+  end
+end
diff --git a/spec/yaaf/normalization_spec.rb b/spec/yaaf/normalization_spec.rb
new file mode 100644
index 0000000..c1e5b49
--- /dev/null
+++ b/spec/yaaf/normalization_spec.rb
@@ -0,0 +1,50 @@
+# frozen_string_literal: true
+
+RSpec.describe 'Form with normalization' do
+  if defined?(ActiveModel::Attributes::Normalization)
+    let(:form) { WithNormalizeForm.new(args) }
+    let(:args) { { email: '  TEST@Example.com  ', name: '  john doe  ' } }
+
+    describe 'attribute normalization' do
+      it 'normalizes email on assignment' do
+        expect(form.email).to eq('test@example.com')
+      end
+
+      it 'normalizes name on assignment' do
+        expect(form.name).to eq('John Doe')
+      end
+    end
+
+    describe '#save' do
+      subject { form.save }
+
+      it 'saves with normalized values' do
+        expect(subject).to be true
+        expect(User.last.email).to eq('test@example.com')
+        expect(User.last.name).to eq('John Doe')
+      end
+    end
+
+    describe '#valid?' do
+      it 'validates with normalized values' do
+        expect(form.valid?).to be true
+      end
+    end
+
+    context 'when updating attributes' do
+      it 'normalizes new values' do
+        form.email = '  test@example.com  '
+        expect(form.email).to eq('test@example.com')
+      end
+    end
+
+    context 'with nil values' do
+      let(:args) { { email: nil, name: nil } }
+
+      it 'does not normalize nil by default' do
+        expect(form.email).to be_nil
+        expect(form.name).to be_nil
+      end
+    end
+  end
+end
diff --git a/yaaf.gemspec b/yaaf.gemspec
index 91ee8c6..bdbaea7 100644
--- a/yaaf.gemspec
+++ b/yaaf.gemspec
@@ -26,7 +26,6 @@ Gem::Specification.new do |spec|
 
   spec.add_development_dependency 'database_cleaner-active_record', '~> 2.1.0'
   spec.add_development_dependency 'rake', '~> 13.0.1'
-  spec.add_development_dependency 'reek', '~> 5.6.0'
   spec.add_development_dependency 'rspec', '~> 3.9.0'
   spec.add_development_dependency 'rubocop', '~> 0.80.0'
   spec.add_development_dependency 'simplecov', '~> 0.17.1'