diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index da7e3e7..1ad91aa 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -16,8 +16,10 @@ jobs:
       fail-fast: false
       matrix:
         gemfile: ["rails-7.0.x"]
-        ruby: [3.1]
+        ruby: [3.2]
         include:
+          - gemfile: rails-7.0.x
+            ruby: '3.1'
           - gemfile: rails-7.0.x
             ruby: '3.0'
           - gemfile: rails-7.0.x
diff --git a/.github/workflows/gem-push.yml b/.github/workflows/gem-push.yml
index 0d41a4d..fb5ae05 100644
--- a/.github/workflows/gem-push.yml
+++ b/.github/workflows/gem-push.yml
@@ -14,11 +14,11 @@ jobs:
       packages: write
 
     steps:
-    - uses: actions/checkout@v3
-    - name: Set up Ruby 2.6
-      uses: actions/setup-ruby@v1
+    - uses: actions/checkout@v2
+    - name: Set up Ruby 3.2
+      uses: ruby/setup-ruby@v1
       with:
-        ruby-version: 2.6.x
+        ruby-version: '3.2'
 
     - name: Publish to RubyGems
       run: |
diff --git a/.gitignore b/.gitignore
index 7f63077..a660c32 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,4 +2,5 @@
 pkg
 rdoc
 coverage
+gemfiles/*.lock
 *.log
diff --git a/lib/validation_group.rb b/lib/validation_group.rb
index 8cb1e83..baf5833 100644
--- a/lib/validation_group.rb
+++ b/lib/validation_group.rb
@@ -87,8 +87,8 @@ def valid?(group=nil)
       end
     end
 
-    module Errors # included in ActiveRecord::Errors
-      def add(attribute, msg = nil, *args, &block)
+    module Errors # included in ActiveModel::Errors
+      def add(attribute, type = :invalid, **options)
         # jeffp: setting @current_validation_fields and use of should_validate? optimizes code
         add_error = @base.respond_to?(:should_validate?) ? @base.should_validate?(attribute.to_sym) : true
         super if add_error
diff --git a/test/test_helper.rb b/test/test_helper.rb
index dfd1a81..52ed065 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -1,8 +1,10 @@
 $:.unshift(File.dirname(__FILE__) + '/../lib')
 
 require 'rubygems'
+require 'simplecov'
+SimpleCov.minimum_coverage 89
+SimpleCov.start 'rails'
 
-gem 'activerecord', ENV['AR_VERSION'] ? "=#{ENV['AR_VERSION']}" : '>=2.1.0'
 require 'active_record'
 require 'test/unit'
 require 'validation_group'
diff --git a/validation_group.gemspec b/validation_group.gemspec
index 0a3b9cf..9e6de6c 100644
--- a/validation_group.gemspec
+++ b/validation_group.gemspec
@@ -2,7 +2,7 @@
 
 Gem::Specification.new do |s|
   s.name = "validation_group"
-  s.version = "0.2.0"
+  s.version = "0.2.2"
 
   s.required_rubygems_version = Gem::Requirement.new(">= 0") if s.respond_to? :required_rubygems_version=
   s.authors = ["Alex Kira"]
@@ -18,6 +18,7 @@ Gem::Specification.new do |s|
   s.add_runtime_dependency 'activerecord', '> 5.2', '< 8'
   s.add_development_dependency 'bundler', '> 1.17'
   s.add_development_dependency 'rake', '> 0.8'
+  s.add_development_dependency 'simplecov'
   s.add_development_dependency 'sqlite3'
   s.add_development_dependency 'test-unit'