diff --git a/Gemfile b/Gemfile
index 6e8075b..691118b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -27,18 +27,24 @@ group :development, :test do
   gem 'railties'
   # running documentation generation tasks and rspec tasks
   gem 'rake'
-  # Used for Sql Lite Db
-  gem 'sqlite3', '~> 1.7'
   # provides a complete suite of testing facilities supporting TDD, BDD, mocking, and benchmarking.
   gem "minitest"
   gem 'rspec-rails'
   # defines time zones for activesupport.  Must be explicit since it is normally implicit with activerecord
   gem 'tzinfo'
+
+  rails_version = ENV['RAILS_VERSION'].to_s[/\d+(?:\.\d+){0,2}/]
+  sqlite3_requirements = if rails_version && rails_version.split('.').first.to_i < 8
+                           ['~> 1.4']
+                         else
+                           ['>= 2.1', '< 3.0']
+                         end
+  gem 'sqlite3', *sqlite3_requirements
 end
 
 group :test do
   # Test the 'Metasploit::Concern.run' shared example
-  gem 'aruba'
+  gem 'aruba', '~> 2.3'
   # Test the 'Metasploit::Concern.run' shared example
   gem 'cucumber'
   # add matchers from shoulda, such as validates_presence_of, which are useful for testing validations
diff --git a/lib/metasploit/concern/version.rb b/lib/metasploit/concern/version.rb
index 3359962..4d2371c 100644
--- a/lib/metasploit/concern/version.rb
+++ b/lib/metasploit/concern/version.rb
@@ -1,7 +1,7 @@
 module Metasploit
   module Concern
     # VERSION is managed by GemRelease
-    VERSION = '5.0.5'
+    VERSION = '5.0.6'
   
     # @return [String]
     #
diff --git a/metasploit-concern.gemspec b/metasploit-concern.gemspec
index 3ac2493..d3f0c87 100644
--- a/metasploit-concern.gemspec
+++ b/metasploit-concern.gemspec
@@ -26,10 +26,13 @@ Gem::Specification.new do |s|
 
   # uses ActiveSupport.on_load to include concerns
   # it is only defined in version 3.0.0 and newer
-  s.add_runtime_dependency 'activemodel', '~> 7.0'
-  s.add_runtime_dependency 'activesupport', '~> 7.0'
+  # Rails 8.0 upgrade: widened from '~> 7.0' (which means >= 7.0, < 8.0) to
+  # '>= 7.0', '< 8.1' so this gem resolves with both Rails 7.x and 8.0.
+  # The old pessimistic constraint hard-blocked Bundler from pulling Rails 8.
+  s.add_runtime_dependency 'activemodel', '>= 7.0', '< 8.1'
+  s.add_runtime_dependency 'activesupport', '>= 7.0', '< 8.1'
   # for engine
-  s.add_runtime_dependency 'railties', '~> 7.0'
+  s.add_runtime_dependency 'railties', '>= 7.0', '< 8.1'
   s.add_runtime_dependency 'zeitwerk'
 
   # Standard libraries: https://www.ruby-lang.org/en/news/2023/12/25/ruby-3-3-0-released/
diff --git a/spec/dummy/config/application.rb b/spec/dummy/config/application.rb
index 790d85e..664c7ac 100644
--- a/spec/dummy/config/application.rb
+++ b/spec/dummy/config/application.rb
@@ -44,8 +44,6 @@ class Application < Rails::Application
 
     config.paths.add 'app/concerns', autoload: true
 
-    config.autoloader = :zeitwerk
-
     initializer :metasploit_concern_test_reloading, before: :setup_main_autoloader do
       Rails.autoloaders.each do |loader|
         loader.enable_reloading