diff --git a/Gemfile b/Gemfile
index 9bc7afaa..6ed10ada 100644
--- a/Gemfile
+++ b/Gemfile
@@ -16,8 +16,8 @@ group :test do
   # rails is not used because activerecord should not be included, but rails would normally coordinate the versions
   # between its dependencies, which is now handled by this constraint.
   rails_version_constraint = [
-      '>= 3.2.0',
-      '< 4.0.0'
+      '>= 4.0.9',
+      '< 4.1.0'
   ]
 
   # Dummy app uses actionpack for ActionController, but not rails since it doesn't use activerecord.
diff --git a/RELEASING.md b/RELEASING.md
index 37fbeed7..d7e5093a 100644
--- a/RELEASING.md
+++ b/RELEASING.md
@@ -40,18 +40,21 @@ Complete these steps on DESTINATION
 
 The entries in the [CHANGELOG.md](CHANGELOG.md) can be used to help determine how the `VERSION` should be bumped.
 
-### Compatible changes
+### Bug fixes
 
-If the [CHANGELOG.md](CHANGELOG.md) contains only Enhancements, Bug Fixes, and/or Deprecations for the Next Release then
-increment [`PATCH`](lib/metasploit/model/version.rb).
+If the [CHANGELOG.md](CHANGELOG.md) contains only Bug Fixes for the Next Release, then increment
+[`PATCH`](lib/metasploit/model/version.rb).
 
-### Incompatible changes
+### Compatible API changes
 
-If the [CHANGELOG.md](CHANGELOG.md) contains any Incompatible Changes for the Next Release, then you can either (1)
-decide to remain pre-1.0.0 or (2) advance to 1.0.0.
+If the [CHANGELOG.md](CHANGELOG.md) contains any Enhancements or Deprecations, then increment
+[`MINOR`](lib/metasploit/model/version.rb) and reset [`PATCH`](lib/metasploit/model/version.rb) to `0`.
 
-1. To remain pre-1..0.0, then increment [`MINOR`](lib/metasploit/model/version.rb) and reset [`PATCH`](lib/metasploit/model/version.rb) to `0`.
-2. To advance to 1.0.0, increment [`MAJOR`](lib/metasploit/model/version.rb) and reset [`MINOR`](lib/metasploit/model/version.rb and [`PATCH`](lib/metasploit/model/version.rb) to `0`.
+### Incompatible API changes
+
+If the [CHANGELOG.md](CHANGELOG.md) contains any Incompatible Change, then increment
+[`MAJOR`](lib/metasploit/model/version.rb) and reset [`MINOR`](lib/metasploit/model/version.rb and
+[`PATCH`](lib/metasploit/model/version.rb) to `0`.
 
 ## Setup [CHANGELOG.md](CHANGELOG.md) for next release
 
diff --git a/lib/metasploit/model.rb b/lib/metasploit/model.rb
index a9168b8c..6c87c4e2 100644
--- a/lib/metasploit/model.rb
+++ b/lib/metasploit/model.rb
@@ -1,6 +1,11 @@
 #
 # Gems
 #
+# gems must load explicitly any gem declared in gemspec
+# @see https://github.com/bundler/bundler/issues/2018#issuecomment-6819359
+#
+#
+
 require 'active_model'
 require 'active_support'
 
diff --git a/lib/metasploit/model/engine.rb b/lib/metasploit/model/engine.rb
index e0ca03e0..3e45ae62 100644
--- a/lib/metasploit/model/engine.rb
+++ b/lib/metasploit/model/engine.rb
@@ -14,7 +14,7 @@ class Metasploit::Model::Engine < Rails::Engine
 
   # Remove ActiveSupport::Dependencies loading paths to save time during constant resolution and to ensure that
   # metasploit-model is properly declaring all autoloads and not falling back on ActiveSupport::Dependencies
-  config.paths.each_value do |path|
+  config.paths.values.each do |path|
     path.skip_autoload!
     path.skip_autoload_once!
     path.skip_eager_load!
diff --git a/lib/metasploit/model/version.rb b/lib/metasploit/model/version.rb
index 5f855037..3531e47a 100644
--- a/lib/metasploit/model/version.rb
+++ b/lib/metasploit/model/version.rb
@@ -7,13 +7,13 @@ module Version
       #
 
       # The major version number.
-      MAJOR = 0
+      MAJOR = 1
       # The minor version number, scoped to the {MAJOR} version number.
-      MINOR = 30
+      MINOR = 0
       # The patch version number, scoped to the {MAJOR} and {MINOR} version numbers.
-      PATCH = 2
+      PATCH = 0
       # The prerelease version, scoped to the {MAJOR}, {MINOR}, and {PATCH} version numbers.
-      PRERELEASE = 'metasploit-version'
+      PRERELEASE = '1-0-0-plus'
 
       #
       # Module Methods
diff --git a/metasploit-model.gemspec b/metasploit-model.gemspec
index 5f94c6ef..31b44c38 100644
--- a/metasploit-model.gemspec
+++ b/metasploit-model.gemspec
@@ -28,8 +28,12 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'yard', '< 0.8.7.4'
 
   # Dependency loading
-  spec.add_runtime_dependency 'activesupport'
-  spec.add_runtime_dependency 'railties', '< 4.0.0'
+  rails_version_constraints = ['>= 4.0.9', '< 4.1.0']
+
+  spec.add_runtime_dependency 'activemodel', *rails_version_constraints
+  spec.add_runtime_dependency 'activesupport', *rails_version_constraints
+
+  spec.add_runtime_dependency 'railties', *rails_version_constraints
 
   if RUBY_PLATFORM =~ /java/
     # markdown formatting for yard
diff --git a/spec/app/models/metasploit/model/search/operator/attribute_spec.rb b/spec/app/models/metasploit/model/search/operator/attribute_spec.rb
index d248a29c..f81baf20 100644
--- a/spec/app/models/metasploit/model/search/operator/attribute_spec.rb
+++ b/spec/app/models/metasploit/model/search/operator/attribute_spec.rb
@@ -30,7 +30,7 @@
 
   context 'validations' do
     it { is_expected.to validate_presence_of(:attribute) }
-    it { is_expected.to ensure_inclusion_of(:type).in_array(described_class::TYPES) }
+    it { is_expected.to validate_inclusion_of(:type).in_array(described_class::TYPES) }
   end
 
   context '#attribute_enumerable' do
@@ -99,4 +99,4 @@
       expect(name).to eq(attribute)
     end
   end
-end
\ No newline at end of file
+end
diff --git a/spec/dummy/config/application.rb b/spec/dummy/config/application.rb
index df099fab..3d87b24b 100644
--- a/spec/dummy/config/application.rb
+++ b/spec/dummy/config/application.rb
@@ -1,6 +1,8 @@
 require File.expand_path('../boot', __FILE__)
 
-require 'rails/all'
+# Pick the frameworks you want:
+require 'active_model/railtie'
+require "action_controller/railtie"
 
 Bundler.require(*Rails.groups)
 
diff --git a/spec/dummy/config/environments/development.rb b/spec/dummy/config/environments/development.rb
index 4b7ab56c..71c78b18 100644
--- a/spec/dummy/config/environments/development.rb
+++ b/spec/dummy/config/environments/development.rb
@@ -16,9 +16,6 @@
   # Print deprecation notices to the Rails logger
   config.active_support.deprecation = :log
 
-  # Only use best-standards-support built into browsers
-  config.action_dispatch.best_standards_support = :builtin
-
   # Do not compress assets
   config.assets.compress = false