diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e43ace9..eccb5ee 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,25 +11,8 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby: ['2.6', '2.7', '3.0', '3.1']
-        gemfile: [rails_5.0, rails_5.1, rails_5.2, rails_6.0, rails_6.1, rails_7.0]
-        exclude:
-          - ruby: '2.6'
-            gemfile: rails_7.0
-          - ruby: '3.0'
-            gemfile: rails_5.0
-          - ruby: '3.0'
-            gemfile: rails_5.1
-          - ruby: '3.0'
-            gemfile: rails_5.2
-          - ruby: '3.1'
-            gemfile: rails_5.0
-          - ruby: '3.1'
-            gemfile: rails_5.1
-          - ruby: '3.1'
-            gemfile: rails_5.2
-          - ruby: '3.1'
-            gemfile: rails_7.0
+        ruby: ['3.0', '3.1', '3.2', '3.3', '3.4']
+        gemfile: [rails_6.1, rails_7.0, rails_7.1]
     env:
       BUNDLE_GEMFILE: ${{ github.workspace }}/gemfiles/${{ matrix.gemfile }}.gemfile
 
diff --git a/gemfiles/rails_5.0.gemfile b/gemfiles/rails_5.0.gemfile
deleted file mode 100644
index 3826767..0000000
--- a/gemfiles/rails_5.0.gemfile
+++ /dev/null
@@ -1,9 +0,0 @@
-source 'https://rubygems.org'
-
-gem 'activerecord', '~> 5.0.0'
-gem 'activesupport', '~> 5.0.0'
-gem 'actionview', '~> 5.0.0'
-gem 'railties', '~> 5.0.0'
-gem 'pg', '~> 0.21'
-
-gemspec path: '../'
diff --git a/gemfiles/rails_5.1.gemfile b/gemfiles/rails_5.1.gemfile
deleted file mode 100644
index 41adbc6..0000000
--- a/gemfiles/rails_5.1.gemfile
+++ /dev/null
@@ -1,9 +0,0 @@
-source 'https://rubygems.org'
-
-gem 'activerecord', '~> 5.1.0'
-gem 'activesupport', '~> 5.1.0'
-gem 'actionview', '~> 5.1.0'
-gem 'railties', '~> 5.1.0'
-gem 'pg', '~> 0.21'
-
-gemspec path: '../'
diff --git a/gemfiles/rails_5.2.gemfile b/gemfiles/rails_5.2.gemfile
deleted file mode 100644
index 27eced2..0000000
--- a/gemfiles/rails_5.2.gemfile
+++ /dev/null
@@ -1,9 +0,0 @@
-source 'https://rubygems.org'
-
-gem 'activerecord', '~> 5.2.0'
-gem 'activesupport', '~> 5.2.0'
-gem 'actionview', '~> 5.2.0'
-gem 'railties', '~> 5.2.0'
-gem 'pg', '~> 1.2'
-
-gemspec path: '../'
diff --git a/gemfiles/rails_6.0.gemfile b/gemfiles/rails_6.0.gemfile
deleted file mode 100644
index 5ab3658..0000000
--- a/gemfiles/rails_6.0.gemfile
+++ /dev/null
@@ -1,9 +0,0 @@
-source 'https://rubygems.org'
-
-gem 'activerecord', '~> 6.0.0'
-gem 'activesupport', '~> 6.0.0'
-gem 'actionview', '~> 6.0.0'
-gem 'railties', '~> 6.0.0'
-gem 'pg', '~> 1.2'
-
-gemspec path: '../'
diff --git a/gemfiles/rails_6.1.gemfile b/gemfiles/rails_6.1.gemfile
index 7805e77..73ee9b0 100644
--- a/gemfiles/rails_6.1.gemfile
+++ b/gemfiles/rails_6.1.gemfile
@@ -4,6 +4,5 @@ gem 'activerecord', '~> 6.1.0'
 gem 'activesupport', '~> 6.1.0'
 gem 'actionview', '~> 6.1.0'
 gem 'railties', '~> 6.1.0'
-gem 'pg', '~> 1.2'
 
 gemspec path: '../'
\ No newline at end of file
diff --git a/gemfiles/rails_7.0.gemfile b/gemfiles/rails_7.0.gemfile
index 96a0e8b..5419b80 100644
--- a/gemfiles/rails_7.0.gemfile
+++ b/gemfiles/rails_7.0.gemfile
@@ -4,7 +4,5 @@ gem 'activerecord', '~> 7.0.0'
 gem 'activesupport', '~> 7.0.0'
 gem 'actionview', '~> 7.0.0'
 gem 'railties', '~> 7.0.0'
-gem 'pg', '~> 1.2'
-gem 'ransack', github: 'activerecord-hackery/ransack'
 
 gemspec path: '../'
\ No newline at end of file
diff --git a/gemfiles/rails_7.1.gemfile b/gemfiles/rails_7.1.gemfile
new file mode 100644
index 0000000..e213fe8
--- /dev/null
+++ b/gemfiles/rails_7.1.gemfile
@@ -0,0 +1,8 @@
+source 'https://rubygems.org'
+
+gem 'activerecord', '~> 7.1.0'
+gem 'activesupport', '~> 7.1.0'
+gem 'actionview', '~> 7.1.0'
+gem 'railties', '~> 7.1.0'
+
+gemspec path: '../'
\ No newline at end of file
diff --git a/lib/ransacker_translator/version.rb b/lib/ransacker_translator/version.rb
index 146fa7d..e699f50 100644
--- a/lib/ransacker_translator/version.rb
+++ b/lib/ransacker_translator/version.rb
@@ -1,3 +1,3 @@
 module RansackerTranslator
-  VERSION = "0.1.4"
+  VERSION = "0.1.5"
 end
diff --git a/ransacker_translator.gemspec b/ransacker_translator.gemspec
index 226db1f..6c513f0 100644
--- a/ransacker_translator.gemspec
+++ b/ransacker_translator.gemspec
@@ -14,7 +14,7 @@ Gem::Specification.new do |spec|
   spec.summary     = "expand search by ransack"
   spec.description = "expand search by ransack"
   spec.license     = "MIT"
-  spec.required_ruby_version = Gem::Requirement.new(">= 2.6.0")
+  spec.required_ruby_version = Gem::Requirement.new(">= 3.0.0")
 
   # s.files = Dir["{app,config,db,lib}/**/*", "MIT-LICENSE", "Rakefile", "README.rdoc"]
   spec.files = Dir["{lib}/**/*", "MIT-LICENSE", "Rakefile", "README.rdoc"]
@@ -24,13 +24,19 @@ Gem::Specification.new do |spec|
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ['lib']
 
-  spec.add_dependency "activerecord", '< 7.1.0', '>= 5.0.0'
-  spec.add_dependency "activesupport", '< 7.1.0', '>= 5.0.0'
-  spec.add_dependency "actionview", '< 7.1.0', '>= 5.0.0'
-  spec.add_dependency "railties", '< 7.1.0', '>= 5.0.0'
-  spec.add_dependency "ransack"
-  spec.add_dependency "pg"
+  spec.add_dependency "activerecord", '< 7.2.0', '>= 6.1.0'
+  spec.add_dependency "activesupport", '< 7.2.0', '>= 6.1.0'
+  spec.add_dependency "actionview", '< 7.2.0', '>= 6.1.0'
+  spec.add_dependency "railties", '< 7.2.0', '>= 6.1.0'
+  spec.add_dependency "ransack", '>= 4.1.0'
+  spec.add_dependency "pg", '~> 1.2'
+  spec.add_dependency "nkf"
 
   spec.add_development_dependency 'pry', '~> 0.14'
-  spec.add_development_dependency 'database_cleaner', '~> 1.7'
+  spec.add_development_dependency 'database_cleaner', '~> 2.1'
+  spec.add_development_dependency "mutex_m"
+  spec.add_development_dependency "bigdecimal"
+  spec.add_development_dependency "base64"
+  spec.add_development_dependency "drb"
+  spec.add_development_dependency "concurrent-ruby", '1.3.4'
 end
diff --git a/test/internal/app/models/post.rb b/test/internal/app/models/post.rb
index 433de4b..52558da 100644
--- a/test/internal/app/models/post.rb
+++ b/test/internal/app/models/post.rb
@@ -4,4 +4,8 @@ class Post < ActiveRecord::Base
   ransacker_translate :title, :content
 
   validates :title, presence: true
-end
\ No newline at end of file
+
+  def self.ransackable_attributes(auth_object = nil)
+    ["title_translate"]
+  end
+end