diff --git a/xen.spec b/xen.spec
index 1803818..53f45f9 100644
--- a/xen.spec
+++ b/xen.spec
@@ -17,6 +17,7 @@ Patch0: xen-printf-warning.patch
 Patch1: xen-install-nocheck.patch
 BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root
 BuildRequires: bridge-utils transfig
+Requires: bridge-utils python-twisted
 ExclusiveArch: i386
 
 %description