diff --git a/ruby-2.1.2-p79-hash.c-extra-states.patch b/ruby-2.1.2-p79-hash.c-extra-states.patch
new file mode 100644
index 0000000..834bb4c
--- /dev/null
+++ b/ruby-2.1.2-p79-hash.c-extra-states.patch
@@ -0,0 +1,33 @@
+From d5c45b5fb11748acbfc9ee6c7dbfeb04408de53d Mon Sep 17 00:00:00 2001
+From: naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+Date: Sat, 1 Mar 2014 09:02:36 +0000
+Subject: [PATCH] merge revision(s) 44370: [Backport #9576]
+
+	hash.c: extra states
+
+	* hash.c (rb_hash_reject): use words "extra states".
+
+
+git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@45227 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
+---
+ hash.c    | 2 +-
+ 1 files changed, 1 insertions(+), 1 deletions(-)
+
+diff --git a/hash.c b/hash.c
+index 66cd94b..9a5814a 100644
+--- a/hash.c
++++ b/hash.c
+@@ -1178,7 +1178,7 @@ struct shift_var {
+ #endif
+ 	}
+     }
+-#if HASH_REJECT_COPY_MISC_ATTRIBUTES
++#if HASH_REJECT_COPY_EXTRA_STATES
+     result = rb_hash_dup_empty(hash);
+ #else
+     result = rb_hash_new();
+diff --git a/version.h b/version.h
+index 8c8f900..59c80e3 100644
+-- 
+1.9.1
+
diff --git a/ruby.spec b/ruby.spec
index 4744e93..11d9a6d 100644
--- a/ruby.spec
+++ b/ruby.spec
@@ -139,6 +139,8 @@ Patch12: ruby-1.9.3-mkmf-verbose.patch
 # in support for ABRT.
 # http://bugs.ruby-lang.org/issues/8566
 Patch17: ruby-2.1.0-Allow-to-specify-additional-preludes-by-configuratio.patch
+# https://www.ruby-lang.org/en/news/2014/03/10/regression-of-hash-reject-in-ruby-2-1-1/
+Patch18: ruby-2.1.2-p79-hash.c-extra-states.patch
 
 Requires: %{name}-libs%{?_isa} = %{version}-%{release}
 Requires: ruby(rubygems) >= %{rubygems_version}
@@ -399,6 +401,7 @@ Tcl/Tk interface for the object-oriented scripting language Ruby.
 %patch8 -p1
 %patch12 -p1
 %patch17 -p1
+%patch18 -p1
 
 # Provide an example of usage of the tapset:
 cp -a %{SOURCE3} .
@@ -881,8 +884,9 @@ OPENSSL_ENABLE_MD5_VERIFY=1 make check TESTS="-v $DISABLE_TESTS"
 %{ruby_libdir}/tkextlib
 
 %changelog
-* Wed Mar 05 2014 Vít Ondruch <vondruch@redhat.com> - 2.1.1-18
+* Tue Apr 08 2014 Vít Ondruch <vondruch@redhat.com> - 2.1.1-18
 - Update to Ruby 2.1.1.
+- Revert regression of Hash#reject.
 
 * Mon Mar 03 2014 Vít Ondruch <vondruch@redhat.com> - 2.1.0-19
 - Add RPM dependency generators for RubyGems.