diff -Nru rails-4.2.10/debian/changelog rails-4.2.10/debian/changelog
--- rails-4.2.10/debian/changelog	2018-03-18 11:50:16.000000000 +0000
+++ rails-4.2.10/debian/changelog	2018-04-21 12:10:11.000000000 +0000
@@ -1,3 +1,10 @@
+rails (2:4.2.10-1ubuntu1) bionic; urgency=medium
+
+  * Re-apply be9dc78fccc80bb5045c67b435b5c7e36ea8a296.patch that was
+    dropped when syncing the Debian version over the previous Ubuntu.
+
+ -- Adam Conrad <adconrad@ubuntu.com>  Sat, 21 Apr 2018 06:10:11 -0600
+
 rails (2:4.2.10-1) unstable; urgency=medium
 
   * New upstream version 4.2.10
diff -Nru rails-4.2.10/debian/control rails-4.2.10/debian/control
--- rails-4.2.10/debian/control	2018-03-18 11:50:16.000000000 +0000
+++ rails-4.2.10/debian/control	2018-04-21 12:10:11.000000000 +0000
@@ -1,7 +1,8 @@
 Source: rails
 Section: ruby
 Priority: optional
-Maintainer: Debian Ruby Extras Maintainers <pkg-ruby-extras-maintainers@lists.alioth.debian.org>
+Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: Debian Ruby Extras Maintainers <pkg-ruby-extras-maintainers@lists.alioth.debian.org>
 Uploaders: Pirate Praveen <praveen@debian.org>
 Build-Depends: debhelper (>= 11~),
                gem2deb (>= 0.4.0~),
diff -Nru rails-4.2.10/debian/patches/be9dc78fccc80bb5045c67b435b5c7e36ea8a296.patch rails-4.2.10/debian/patches/be9dc78fccc80bb5045c67b435b5c7e36ea8a296.patch
--- rails-4.2.10/debian/patches/be9dc78fccc80bb5045c67b435b5c7e36ea8a296.patch	1970-01-01 00:00:00.000000000 +0000
+++ rails-4.2.10/debian/patches/be9dc78fccc80bb5045c67b435b5c7e36ea8a296.patch	2018-04-21 12:09:25.000000000 +0000
@@ -0,0 +1,35 @@
+From be9dc78fccc80bb5045c67b435b5c7e36ea8a296 Mon Sep 17 00:00:00 2001
+From: Yasuo Honda <yasuo.honda@gmail.com>
+Date: Thu, 11 Aug 2016 11:26:20 +0000
+Subject: [PATCH] Creating a new Topic class instead of class_eval for the
+ existing one since it affects another test
+ `ReflectionTest#test_read_attribute_names`
+
+Address #26099
+---
+ activerecord/test/cases/validations_test.rb | 6 ++----
+ 1 file changed, 2 insertions(+), 4 deletions(-)
+
+Index: rails-4.2.10/activerecord/test/cases/validations_test.rb
+===================================================================
+--- rails-4.2.10.orig/activerecord/test/cases/validations_test.rb
++++ rails-4.2.10/activerecord/test/cases/validations_test.rb
+@@ -150,16 +150,14 @@ class ValidationsTest < ActiveRecord::Te
+   end
+ 
+   def test_numericality_validation_with_mutation
+-    Topic.class_eval do
++    klass = Class.new(Topic) do
+       attribute :wibble, ActiveRecord::Type::String.new
+       validates_numericality_of :wibble, only_integer: true
+     end
+ 
+-    topic = Topic.new(wibble: '123-4567')
++    topic = klass.new(wibble: "123-4567")
+     topic.wibble.gsub!('-', '')
+ 
+     assert topic.valid?
+-  ensure
+-    Topic.reset_column_information
+   end
+ end
diff -Nru rails-4.2.10/debian/patches/series rails-4.2.10/debian/patches/series
--- rails-4.2.10/debian/patches/series	2018-03-18 11:50:16.000000000 +0000
+++ rails-4.2.10/debian/patches/series	2018-04-21 12:09:56.000000000 +0000
@@ -2,3 +2,4 @@
 0002-load_paths.rb-don-t-load-bundler.patch
 0004-ActiveRecord-adjust-test-suite-for-Debian-build.patch
 0005-rack-test-relax-spec.patch
+be9dc78fccc80bb5045c67b435b5c7e36ea8a296.patch