diff --git a/.gitignore b/.gitignore
index e69de29..3d22a5c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1,3 @@
+/mustermann-1.0.0-mustermann-contrib.tgz
+/mustermann-1.0.0-support.tgz
+/mustermann-1.0.0.gem
diff --git a/rubygem-mustermann.spec b/rubygem-mustermann.spec
new file mode 100644
index 0000000..55a28f6
--- /dev/null
+++ b/rubygem-mustermann.spec
@@ -0,0 +1,94 @@
+# Generated from mustermann-1.0.0.gem by gem2rpm -*- rpm-spec -*-
+%global gem_name mustermann
+
+# Circular dependency with rubygem-sinatra
+%{?_with_bootstrap: %global bootstrap 1}
+
+Name: rubygem-%{gem_name}
+Version: 1.0.0
+Release: 1%{?dist}
+Summary: Use patterns like regular expressions
+License: MIT
+URL: https://github.com/sinatra/mustermann
+Source0: https://rubygems.org/gems/%{gem_name}-%{version}.gem
+# Support and mustermann-contrib routines required by test suite.
+# git clone https://github.com/sinatra/mustermann.git && cd mustermann
+# git checkout v1.0.0 && tar czvf mustermann-1.0.0-support.tgz support/
+Source1: mustermann-1.0.0-support.tgz
+# tar czvf mustermann-1.0.0-mustermann-contrib.tgz mustermann-contrib/
+Source2: mustermann-1.0.0-mustermann-contrib.tgz
+BuildRequires: ruby(release)
+BuildRequires: rubygems-devel
+BuildRequires: ruby >= 2.2.0
+BuildRequires: rubygem(rspec)
+BuildRequires: rubygem(rspec-its)
+%if ! 0%{?bootstrap}
+BuildRequires: rubygem(sinatra)
+%endif
+BuildRequires: rubygem(rack-test)
+BuildArch: noarch
+
+%description
+library implementing patterns that behave like regular expressions.
+
+
+%package doc
+Summary: Documentation for %{name}
+Requires: %{name} = %{version}-%{release}
+BuildArch: noarch
+
+%description doc
+Documentation for %{name}.
+
+%prep
+gem unpack %{SOURCE0}
+
+%setup -q -D -T -n  %{gem_name}-%{version} -b 1 -b 2
+
+gem spec %{SOURCE0} -l --ruby > %{gem_name}.gemspec
+
+%build
+# Create the gem as gem install only works on a gem file
+gem build %{gem_name}.gemspec
+
+# %%gem_install compiles any C extensions and installs the gem into ./%%gem_dir
+# by default, so that we can move it into the buildroot in %%install
+%gem_install
+
+%install
+mkdir -p %{buildroot}%{gem_dir}
+cp -a .%{gem_dir}/* \
+        %{buildroot}%{gem_dir}/
+
+%if ! 0%{?bootstrap}
+# Run the test suite
+%check
+# We don't ship tool.
+sed -i "/^require 'tool\/warning_filter'/ s/^/#/" \
+  %{_builddir}/support/lib/support/env.rb
+# We don't test coverage.
+sed -i "/^require 'support\/coverage'/ s/^/#/" \
+  %{_builddir}/support/lib/support.rb
+
+pushd .%{gem_instdir}
+rspec -I%{_builddir}/{support,mustermann-contrib}/lib spec
+popd
+%endif
+
+%files
+%dir %{gem_instdir}
+%license %{gem_instdir}/LICENSE
+%{gem_libdir}
+%exclude %{gem_instdir}/mustermann.gemspec
+%exclude %{gem_cache}
+%{gem_spec}
+
+%files doc
+%doc %{gem_docdir}
+%doc %{gem_instdir}/README.md
+%{gem_instdir}/bench
+%{gem_instdir}/spec
+
+%changelog
+* Fri Jun 09 2017 Jun Aruga <jaruga@redhat.com> - 1.0.0-1
+- Initial package
diff --git a/sources b/sources
index e69de29..966c138 100644
--- a/sources
+++ b/sources
@@ -0,0 +1,3 @@
+SHA512 (mustermann-1.0.0-mustermann-contrib.tgz) = 6b560ea312c861ae4526733e96abf64dd2e42cdcb5babff46a384ea0712b8b8db7bfd0ed1d736670b32f35311afe8b18c095d25f3c3fb7b8977b94f5199e1082
+SHA512 (mustermann-1.0.0-support.tgz) = 5ac7bdc90ebff73e57b5f893b516a3249ff7802b9b2c29c9705360428a6741ef5410dd9791e1c8add181bb8dc32555de1cb3513235839541f19ea7e1f38546a8
+SHA512 (mustermann-1.0.0.gem) = eaccd4784373d03f9fabfa645e5c1272b29f5b2fb54942bf36d0f0cb033fdd50ac34ee2cf4c5928f20c6cf25d2a5fd9442ed56ebdce93ca8a3c9efff7014256b