diff --git a/dev-ruby/rails-observers/Manifest b/dev-ruby/rails-observers/Manifest
deleted file mode 100644
index 23c67091e58ba..0000000000000
--- a/dev-ruby/rails-observers/Manifest
+++ /dev/null
@@ -1 +0,0 @@
-DIST rails-observers-0.1.2.tgz 20076 SHA256 c4f614b4438332d35edc8459fbfcad5c44ead0e2cf8c90c76a0ac26cf8e6b4e6 SHA512 8dbf268c2dcaf41817b0859fcaf4f55f337c3b632e735b5352db1691058a6ec65071a46bf0768926daa2b587f824809724874dc106a525b3d20f5fa0b150518d WHIRLPOOL 78c3cb33fbc2a4234614cc8d9ee5e6803ddf34d64519a622a0608387f93b31a02ee31dd1cf6d9b0ef7cd2275347bc2f610f0b055b8a7eee3ea64ad998e47a1d5
diff --git a/dev-ruby/rails-observers/files/rails-observers-0.1.2-fix-tests.patch b/dev-ruby/rails-observers/files/rails-observers-0.1.2-fix-tests.patch
deleted file mode 100644
index 07bc58f3f8d20..0000000000000
--- a/dev-ruby/rails-observers/files/rails-observers-0.1.2-fix-tests.patch
+++ /dev/null
@@ -1,72 +0,0 @@
-commit 0757380fb62bc80ab7f1867b36d8a8b77ad3ed5f
-Author: Simon Jesenko <simon.jesenko@gmail.com>
-Date:   Fri Jul 18 08:00:52 2014 +0200
-
-    fixing tests, substituting ActiveRecord::TestCase with ActiveSupport::TestCase
-
-diff --git a/test/helper.rb b/test/helper.rb
-index b30895f..b0a647e 100644
---- a/test/helper.rb
-+++ b/test/helper.rb
-@@ -1,6 +1,6 @@
- require 'minitest/autorun'
- require 'active_record'
--
-+require 'rails'
- require 'rails/observers/activerecord/active_record'
- 
- FIXTURES_ROOT = File.expand_path(File.dirname(__FILE__)) + "/fixtures"
-@@ -68,7 +68,3 @@ end
- 
- class Minimalistic < ActiveRecord::Base
- end
--
--ActiveSupport::Deprecation.silence do
--  require 'active_record/test_case'
--end
-diff --git a/test/lifecycle_test.rb b/test/lifecycle_test.rb
-index 5129670..fb55206 100644
---- a/test/lifecycle_test.rb
-+++ b/test/lifecycle_test.rb
-@@ -118,7 +118,7 @@ class AroundTopicObserver < ActiveRecord::Observer
-   end
- end
- 
--class LifecycleTest < ActiveRecord::TestCase
-+class LifecycleTest < ActiveSupport::TestCase
-   fixtures :topics, :developers, :minimalistics
- 
-   def test_before_destroy
-diff --git a/test/observing_test.rb b/test/observing_test.rb
-index a7f63dc..120d531 100644
---- a/test/observing_test.rb
-+++ b/test/observing_test.rb
-@@ -32,6 +32,16 @@ end
- class ObservingTest < ActiveModel::TestCase
-   def setup
-     ObservedModel.observers.clear
-+    FooObserver.singleton_class.instance_eval do
-+      alias_method :original_observed_classes, :observed_classes
-+    end
-+  end
-+
-+  def teardown
-+    FooObserver.singleton_class.instance_eval do
-+      undef_method :observed_classes
-+      alias_method :observed_classes, :original_observed_classes
-+    end
-   end
- 
-   test "initializes model with no cached observers" do
-diff --git a/test/transaction_callbacks_test.rb b/test/transaction_callbacks_test.rb
-index 8f14cd3..30cbb03 100644
---- a/test/transaction_callbacks_test.rb
-+++ b/test/transaction_callbacks_test.rb
-@@ -1,6 +1,6 @@
- require "helper"
- 
--class TransactionCallbacksTest < ActiveRecord::TestCase
-+class TransactionCallbacksTest < ActiveSupport::TestCase
-   self.use_transactional_fixtures = false
-   fixtures :topics
- 
diff --git a/dev-ruby/rails-observers/metadata.xml b/dev-ruby/rails-observers/metadata.xml
deleted file mode 100644
index 4325de8c3b199..0000000000000
--- a/dev-ruby/rails-observers/metadata.xml
+++ /dev/null
@@ -1,11 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
-<pkgmetadata>
-  <maintainer type="project">
-    <email>ruby@gentoo.org</email>
-    <name>Gentoo Ruby Project</name>
-  </maintainer>
-  <upstream>
-    <remote-id type="github">rails/rails-observers</remote-id>
-  </upstream>
-</pkgmetadata>
diff --git a/dev-ruby/rails-observers/rails-observers-0.1.2.ebuild b/dev-ruby/rails-observers/rails-observers-0.1.2.ebuild
deleted file mode 100644
index 35e652b606575..0000000000000
--- a/dev-ruby/rails-observers/rails-observers-0.1.2.ebuild
+++ /dev/null
@@ -1,43 +0,0 @@
-# Copyright 1999-2017 Gentoo Foundation
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=5
-
-USE_RUBY="ruby21 ruby22"
-
-RUBY_FAKEGEM_TASK_TEST="test:regular"
-
-RUBY_FAKEGEM_TASK_DOC=""
-RUBY_FAKEGEM_DOCDIR="doc"
-RUBY_FAKEGEM_EXTRADOC="README.md"
-
-inherit ruby-fakegem versionator
-
-DESCRIPTION="Rails Observers"
-HOMEPAGE="https://github.com/rails/rails-observers"
-SRC_URI="https://github.com/rails/${PN}/archive/v${PV}.tar.gz -> ${P}.tgz"
-
-LICENSE="MIT"
-SLOT="$(get_version_component_range 1-2)"
-KEYWORDS="~amd64"
-IUSE=""
-
-RUBY_PATCHES=( "${P}-fix-tests.patch" )
-
-ruby_add_rdepend "=dev-ruby/activemodel-4*"
-
-ruby_add_bdepend "
-	test? (
-		dev-ruby/bundler
-		>=dev-ruby/minitest-3
-		=dev-ruby/railties-4*
-		=dev-ruby/activerecord-4*
-		=dev-ruby/actionmailer-4*
-		=dev-ruby/actionpack-4*
-		>=dev-ruby/sqlite3-1.3
-	)"
-
-all_ruby_prepare() {
-	# Avoid rake test since it will run with the wrong ruby interpreter.
-	rm test/rake_test.rb || die
-}