diff --git a/stfl.spec b/stfl.spec
index e041735..9991942 100644
--- a/stfl.spec
+++ b/stfl.spec
@@ -1,6 +1,6 @@
 Name:           stfl
 Version:        0.22
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        The Structured Terminal Forms Language/Library
 
 Group:          System Environment/Libraries
@@ -54,7 +54,7 @@ Python binding for STFL.
 Summary:        Ruby binding for STFL
 Group:          Development/Libraries
 Requires:       %{name} = %{version}-%{release}
-Requires:       ruby(abi) = 1.9.1
+Requires:       ruby(release)
 
 %description    ruby
 Ruby binding for STFL.
@@ -93,9 +93,12 @@ export CFLAGS="%{optflags}"
 #echo `ruby -rrbconfig -e 'puts Config::CONFIG["sitearchdir"] '`
 sed -i 's|ruby extconf.rb|ruby extconf.rb --vendor|' ruby/Makefile.snippet
 
+make  %{?_smp_mflags}
+
 
 %install
-make install DESTDIR=%{buildroot}
+# ruby_headers= applied as a workaround for rhbz#921650
+make install DESTDIR=%{buildroot} ruby_headers=
 # give the shared libraries executable permissions so they get stripped
 # also fixes the 0555 permissions on the perl bindings
 find %{buildroot} -name '*.so' -exec chmod 755 {} ';'
@@ -143,6 +146,9 @@ rm -f %{buildroot}%{perl_archlib}/perllocal.pod
 
 
 %changelog
+* Wed Mar 27 2013 Vít Ondruch <vondruch@redhat.com> - 0.22-4
+- Rebuild for https://fedoraproject.org/wiki/Features/Ruby_2.0.0
+
 * Sun Feb 24 2013 Ben Boeckel <mathstuf@gmail.com> - 0.22-3
 - Fix soversion glob