diff --git a/.travis.yml b/.travis.yml
index d93bca0e..f7e9f837 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -28,7 +28,6 @@ rvm:
 - 2.2
 - 2.1
 - 2.0
-- 1.9
-- jruby
+- jruby-9
 - rbx-2
 script: bundle exec rake $RAKE_TASK
diff --git a/active_interaction.gemspec b/active_interaction.gemspec
index 6122111d..5d3f92f8 100644
--- a/active_interaction.gemspec
+++ b/active_interaction.gemspec
@@ -16,7 +16,7 @@ Gem::Specification.new do |gem|
   gem.homepage = 'http://devblog.orgsync.com/active_interaction/'
   gem.licenses = %w[MIT]
 
-  gem.required_ruby_version = '>= 1.9.3'
+  gem.required_ruby_version = '>= 2'
 
   {
     'Aaron Lasseigne' => 'aaron.lasseigne@gmail.com',
diff --git a/lib/active_interaction/backports.rb b/lib/active_interaction/backports.rb
index 76b42ee7..d8aa6baa 100644
--- a/lib/active_interaction/backports.rb
+++ b/lib/active_interaction/backports.rb
@@ -4,18 +4,6 @@
 require 'active_support/core_ext'
 
 module ActiveInteraction
-  class GroupedInput # rubocop:disable Style/Documentation
-    # Required for Ruby <= 1.9.3.
-    def [](name)
-      send(name)
-    end unless method_defined?(:[])
-
-    # Required for Ruby <= 1.9.3.
-    def []=(name, value)
-      send("#{name}=", value)
-    end unless method_defined?(:[]=)
-  end
-
   class Errors # rubocop:disable Style/Documentation
     # Required for Rails < 3.2.13.
     protected :initialize_dup