diff --git a/.github/workflows/ci-workflow.yml b/.github/workflows/ci-workflow.yml
index b38d070..b6bfb8b 100644
--- a/.github/workflows/ci-workflow.yml
+++ b/.github/workflows/ci-workflow.yml
@@ -5,13 +5,9 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby: ['2.7', '3.0', '3.1', '3.2']
+        ruby: ['3.0', '3.1', '3.2']
         gemfile: [Gemfile.rails-6.1.x, Gemfile.rails-7.0.x]
         db: [mysql, postgres, sqlite]
-        include:
-          - ruby: 2.7
-            gemfile: Gemfile.rails-6.0.x
-            db: mysql
     env:
       BUNDLE_GEMFILE: ${{ github.workspace }}/spec/support/gemfiles/${{ matrix.gemfile }}
       DB: ${{ matrix.db }}
diff --git a/Gemfile b/Gemfile
index 8939cd8..851fabc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,2 @@
 source 'https://rubygems.org'
-ruby '>= 2.3.0'
 gemspec
diff --git a/double_entry.gemspec b/double_entry.gemspec
index bf1e55c..6be468b 100644
--- a/double_entry.gemspec
+++ b/double_entry.gemspec
@@ -24,12 +24,12 @@ Gem::Specification.new do |gem|
     f.match(%r{^(?:double_entry.gemspec|README|LICENSE|CHANGELOG|lib/)})
   end
   gem.require_paths         = ['lib']
-  gem.required_ruby_version = '>= 2.7.0'
+  gem.required_ruby_version = '>= 3'
 
-  gem.add_dependency 'activerecord',          '>= 6.0.0'
-  gem.add_dependency 'activesupport',         '>= 6.0.0'
-  gem.add_dependency 'money',                 '>= 6.0.0'
-  gem.add_dependency 'railties',              '>= 6.0.0'
+  gem.add_dependency 'activerecord',          '>= 6.1.0'
+  gem.add_dependency 'activesupport',         '>= 6.1.0'
+  gem.add_dependency 'money',                 '>= 6.1.0'
+  gem.add_dependency 'railties',              '>= 6.1.0'
 
   gem.add_development_dependency 'mysql2'
   gem.add_development_dependency 'pg'
diff --git a/spec/support/gemfiles/Gemfile.rails-6.0.x b/spec/support/gemfiles/Gemfile.rails-6.0.x
deleted file mode 100644
index d898a38..0000000
--- a/spec/support/gemfiles/Gemfile.rails-6.0.x
+++ /dev/null
@@ -1,9 +0,0 @@
-source 'https://rubygems.org'
-
-gemspec path: '../../../'
-
-gem 'activerecord', '~> 6.0.0'
-
-# Rails imposed mysql2 version contraints
-# https://github.com/rails/rails/blob/6-0-stable/activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb#L6
-gem 'mysql2', '>= 0.4.4'