Appraisals in image_optim_rails-0.4.3 vs Appraisals in image_optim_rails-0.5.0

@@ -14,22 +14,32 @@
     end
 
     if RUBY_VERSION < '2.1'
       gem 'nokogiri', '< 1.7'
     end
+
+    gem 'tzinfo'
+
+    gem 'sprockets-rails' if gems['railties'] != '~> 3.2' && !gems['sprockets-rails']
   end
 end
 
-if RUBY_VERSION < '2.3'
-  appgen 'rails' => '~> 3.2'
+if RUBY_VERSION < '2.4'
+  appgen 'railties' => '~> 3.2'
 end
 
-if RUBY_VERSION >= '2.1'
-  appgen 'rails' => '~> 4.0', 'sprockets-rails' => '~> 2.0'
-  appgen 'rails' => '~> 4.0', 'sprockets' => '~> 3.0'
+if RUBY_VERSION >= '1.9' && RUBY_VERSION < '2.5'
+  appgen 'railties' => '~> 4.0', 'sprockets-rails' => '~> 2.0'
+  appgen 'railties' => '~> 4.0', 'sprockets' => '~> 3.0'
 end
 
-if RUBY_VERSION >= '2.2'
-  appgen 'rails' => '~> 5.0', 'sprockets-rails' => '~> 2.0'
-  appgen 'rails' => '~> 5.0', 'sprockets' => '~> 3.0'
-  appgen 'rails' => '~> 5.0', 'sprockets' => '>= 4.0.beta'
+if RUBY_VERSION >= '2.3' && RUBY_VERSION < '2.7'
+  appgen 'railties' => '~> 5.0', 'sprockets-rails' => '~> 2.0'
+  appgen 'railties' => '~> 5.0', 'sprockets' => '~> 3.0'
+  appgen 'railties' => '~> 5.0', 'sprockets' => '>= 4.0' if RUBY_VERSION >= '2.5'
+end
+
+if RUBY_VERSION >= '2.5'
+  appgen 'railties' => '~> 6.0', 'sprockets-rails' => '~> 2.0'
+  appgen 'railties' => '~> 6.0', 'sprockets' => '~> 3.0'
+  appgen 'railties' => '~> 6.0', 'sprockets' => '>= 4.0'
 end