diff --git a/pcs.spec b/pcs.spec
index 4a762fb..aca4562 100644
--- a/pcs.spec
+++ b/pcs.spec
@@ -5,7 +5,7 @@ License: GPLv2
 URL: http://github.com/feist/pcs
 Group: System Environment/Base
 BuildArch: x86_64 i686
-BuildRequires: python2-devel ruby
+BuildRequires: python2-devel ruby ruby-devel
 Summary: Pacemaker Configuration System	
 Source0: http://people.redhat.com/cfeist/pcs/pcs-%{version}.tar.gz
 Source1: pcsd.tar.gz