config.gemspec in config-1.7.1 vs config.gemspec in config-1.7.2

@@ -21,21 +21,33 @@
   s.files += Dir.glob('doc/**/*')
 
   s.require_paths         = ['lib']
   s.required_ruby_version = '>= 2.0.0'
 
-  s.add_dependency 'activesupport',           '>= 3.0'
-  s.add_dependency 'deep_merge',              '~> 1.2.1'
+  s.add_dependency 'deep_merge', '~> 1.2', '>= 1.2.1'
 
-  s.add_dependency 'dry-validation',        '>= 0.10.7' if RUBY_VERSION >= '2.1' && RUBY_VERSION < '2.2'
-  s.add_dependency 'dry-validation',        '>= 0.12.2' if RUBY_VERSION >= '2.2'
+  if RUBY_VERSION >= '2.2'
+    s.add_dependency 'activesupport',  '>= 3.0'
+    s.add_dependency 'dry-validation', '~> 0.12', '>= 0.12.2', '< 1.0.0'
 
+    s.add_development_dependency 'rails', '~> 5.2',   '>= 5.2.2'
+  end
+
+  if RUBY_VERSION >= '2.1' && RUBY_VERSION < '2.2'
+    s.add_dependency 'activesupport',    '>= 3.0', '< 5.0.0'
+    s.add_dependency 'dry-configurable', '~> 0.5.0'
+    s.add_dependency 'dry-logic',        '~> 0.5.0'
+    s.add_dependency 'dry-validation',   '~> 0.10', '>= 0.10.7', '< 1.0.0'
+    s.add_dependency 'i18n',             '~> 0.9.0'
+
+    s.add_development_dependency 'rails', '< 5.0.0'
+  end
+
   s.add_development_dependency 'bundler',     '~> 1.13',  '>= 1.13.6'
   s.add_development_dependency 'rake',        '~> 12.0',  '>= 12.0.0'
 
   # Testing
   s.add_development_dependency 'appraisal',   '~> 2.2',   '>= 2.2.0'
-  s.add_development_dependency 'rails',       '~> 5.2',   '>= 5.2.2'
   s.add_development_dependency 'rspec',       '~> 3.7',   '>= 3.7.0'
   s.add_development_dependency 'rspec-rails', '~> 3.7',   '>= 3.7.2'
   s.add_development_dependency 'test-unit',   '~> 3.2',   '>= 3.2.7'
   s.add_development_dependency 'sqlite3',     '~> 1.3',   '>= 1.3.13'