diff --git a/vagrant-libvirt.spec b/vagrant-libvirt.spec
index 9810ccd..091072e 100644
--- a/vagrant-libvirt.spec
+++ b/vagrant-libvirt.spec
@@ -2,7 +2,7 @@
 
 Name: %{vagrant_plugin_name}
 Version: 0.0.32
-Release: 2%{?dist}
+Release: 3%{?dist}
 Summary: libvirt provider for Vagrant
 Group: Development/Languages
 License: MIT
@@ -16,14 +16,16 @@ Requires(preun): vagrant
 Requires: ruby(release)
 Requires: ruby(rubygems)
 Requires: rubygem(fog-libvirt)
-Requires: rubygem(nokogiri) => 1.6.0
-Requires: rubygem(nokogiri) < 1.7
+Requires: rubygem(nokogiri) >= 1.6
+Requires: rubygem(nokogiri) < 2
 Requires: rubygem(multi_json)
 Requires: polkit
 Requires: vagrant
 BuildRequires: vagrant
 BuildRequires: rubygem(rspec) < 3
 BuildRequires: rubygem(fog-libvirt)
+# FIXME: RDoc is not installed: cannot load such file -- rdoc/rdoc
+BuildRequires: rubygem(rdoc)
 BuildArch: noarch
 Provides: vagrant(%{vagrant_plugin_name}) = %{version}
 
@@ -46,6 +48,9 @@ gem unpack %{SOURCE0}
 
 gem spec %{SOURCE0} -l --ruby > %{vagrant_plugin_name}.gemspec
 
+# Relax nokogiri dependency
+sed -i '\@nokogiri@s|~> 1\.6\.0|~> 1.6|' %{vagrant_plugin_name}.gemspec
+
 %build
 gem build %{vagrant_plugin_name}.gemspec
 %vagrant_plugin_install
@@ -106,6 +111,9 @@ getent group vagrant >/dev/null || groupadd -r vagrant
 
 
 %changelog
+* Sun Jan  1 2017 Mamoru TASAKA <mtasaka@fedoraproject.org> - 0.0.32-3
+- Relax nokogiri dependency
+
 * Fri Feb 05 2016 Fedora Release Engineering <releng@fedoraproject.org> - 0.0.32-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_24_Mass_Rebuild