diff --git a/ruby.spec b/ruby.spec
index 3eff915..ce34984 100644
--- a/ruby.spec
+++ b/ruby.spec
@@ -143,6 +143,12 @@ Patch18: ruby-2.1.0-resolv.rb-no-encodings.patch
 # Backport regenerated certificates for IMAP tests.
 # http://bugs.ruby-lang.org/issues/9341
 Patch19: ruby-2.1.1-fix-test-failures-due-to-expired-certs.patch
+# Fix documentation generated on unexpected places.
+# https://github.com/rubygems/rubygems/issues/758
+# https://github.com/rubygems/rubygems/commit/e088c6824209d98eccb0f1e6c7e21f26b4a1178d
+Patch20: rubygems-2.2.1-Add-BasicSpecification-source_paths.patch
+# https://github.com/rubygems/rubygems/commit/2f03b54b63043aadce9e95b83e98b29712bad21f
+Patch21: rubygems-2.2.1-Use-source_paths-for-fallback-rdoc-plugin.patch
 
 Requires: %{name}-libs%{?_isa} = %{version}-%{release}
 Requires: ruby(rubygems) >= %{rubygems_version}
@@ -408,6 +414,8 @@ Tcl/Tk interface for the object-oriented scripting language Ruby.
 %patch17 -p1
 %patch18 -p1
 %patch19 -p1
+%patch20 -p1
+%patch21 -p1
 
 # Provide an example of usage of the tapset:
 cp -a %{SOURCE3} .
@@ -917,6 +925,7 @@ OPENSSL_ENABLE_MD5_VERIFY=1 make check TESTS="-v $DISABLE_TESTS"
 
 %changelog
 * Fri Jan 10 2014 Vít Ondruch <vondruch@redhat.com> - 2.1.0-18
+- Don't generate documentation on unexpected places.
 - Detect if rubygems are running under rpmbuild and install gem binary
   extensions into appropriate place.
 
diff --git a/rubygems-2.2.1-Add-BasicSpecification-source_paths.patch b/rubygems-2.2.1-Add-BasicSpecification-source_paths.patch
new file mode 100644
index 0000000..3cd1bed
--- /dev/null
+++ b/rubygems-2.2.1-Add-BasicSpecification-source_paths.patch
@@ -0,0 +1,73 @@
+From e088c6824209d98eccb0f1e6c7e21f26b4a1178d Mon Sep 17 00:00:00 2001
+From: Eric Hodel <drbrain@segment7.net>
+Date: Mon, 6 Jan 2014 14:20:18 -0800
+Subject: [PATCH] Add BasicSpecification#source_paths
+
+This allows documentation and analysis tools to retrieve paths of source
+files in gems.  This is needed as the introduction of shared gem
+directories means the extension source directory is no longer included
+in require_paths (which was meant for $LOAD_PATH, not source code).
+---
+ lib/rubygems/basic_specification.rb     | 18 ++++++++++++++++++
+ test/rubygems/test_gem_specification.rb | 16 ++++++++++++++++
+ 2 files changed, 34 insertions(+)
+
+diff --git a/lib/rubygems/basic_specification.rb b/lib/rubygems/basic_specification.rb
+index a52377f..470a6eb 100644
+--- a/lib/rubygems/basic_specification.rb
++++ b/lib/rubygems/basic_specification.rb
+@@ -207,6 +207,24 @@ def require_paths
+   end
+ 
+   ##
++  # Returns the paths to the source files for use with analysis and
++  # documentation tools.  These paths are relative to full_gem_path.
++
++  def source_paths
++    paths = raw_require_paths.dup
++
++    if @extensions then
++      ext_dirs = @extensions.map do |extension|
++        extension.split(File::SEPARATOR, 2).first
++      end.uniq
++
++      paths.concat ext_dirs
++    end
++
++    paths.uniq
++  end
++
++  ##
+   # Return a Gem::Specification from this gem
+ 
+   def to_spec
+diff --git a/test/rubygems/test_gem_specification.rb b/test/rubygems/test_gem_specification.rb
+index 46db0c4..b72a5d1 100644
+--- a/test/rubygems/test_gem_specification.rb
++++ b/test/rubygems/test_gem_specification.rb
+@@ -1809,6 +1809,22 @@ def test_source
+     assert_kind_of Gem::Source::Installed, @a1.source
+   end
+ 
++  def test_source_paths
++    ext_spec
++
++    @ext.require_paths = %w[lib ext foo]
++    @ext.extensions << 'bar/baz'
++
++    expected = %w[
++      lib
++      ext
++      foo
++      bar
++    ]
++
++    assert_equal expected, @ext.source_paths
++  end
++
+   def test_full_require_paths
+     ext_spec
+ 
+-- 
+1.8.5.1
+
diff --git a/rubygems-2.2.1-Use-source_paths-for-fallback-rdoc-plugin.patch b/rubygems-2.2.1-Use-source_paths-for-fallback-rdoc-plugin.patch
new file mode 100644
index 0000000..edf40f1
--- /dev/null
+++ b/rubygems-2.2.1-Use-source_paths-for-fallback-rdoc-plugin.patch
@@ -0,0 +1,26 @@
+From 2f03b54b63043aadce9e95b83e98b29712bad21f Mon Sep 17 00:00:00 2001
+From: Eric Hodel <drbrain@segment7.net>
+Date: Mon, 6 Jan 2014 14:30:07 -0800
+Subject: [PATCH] Use source_paths for fallback rdoc plugin
+
+Fixes #758
+---
+ lib/rubygems/rdoc.rb | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/lib/rubygems/rdoc.rb b/lib/rubygems/rdoc.rb
+index 52249dc..633bd89 100644
+--- a/lib/rubygems/rdoc.rb
++++ b/lib/rubygems/rdoc.rb
+@@ -193,7 +193,7 @@ def generate
+     ::RDoc::Parser::C.reset
+ 
+     args = @spec.rdoc_options
+-    args.concat @spec.require_paths
++    args.concat @spec.source_paths
+     args.concat @spec.extra_rdoc_files
+ 
+     case config_args = Gem.configuration[:rdoc]
+-- 
+1.8.5.1
+