diff --git a/srcpkgs/xen/template b/srcpkgs/xen/template
index 6ae43229c4f..5a4bbd9346f 100644
--- a/srcpkgs/xen/template
+++ b/srcpkgs/xen/template
@@ -1,13 +1,18 @@
 # Template file for 'xen'
 pkgname=xen
-version=3.4.2
-distfiles="http://bits.xensource.com/oss-xen/release/$version/xen-$version.tar.gz"
+_dist_ver=4.0.0
+_dist_patch_ver=rc4
+version=${_dist_ver}${_dist_patch_ver}
+wrksrc=xen-${_dist_ver}-${_dist_patch_ver}
+# Use our own distfile created from xen-unstable hg repo.
+distfiles="http://xbps.nopcode.org/distfiles/xen-${_dist_ver}-${_dist_patch_ver}.tar.xz"
+#distfiles="http://bits.xensource.com/oss-xen/release/$version/xen-$version.tar.gz"
 build_style=gnu_makefile
 make_build_target="DISTDIR=$XBPS_DESTDIR/$pkgname-$version xen tools"
 make_install_target="install-xen install-tools"
 short_desc="Xen Hypervisor and Utilities"
 maintainer="Juan RP <xtraeme@gmail.com>"
-checksum=d17c33136041cc8da69214ccf527fc48637bee7a9ab4d68a88ec50e6a9d20b0b
+checksum=6b046925a1b95bc9077f4df89d39b61211075e606c82945b095c65e627eef442
 long_desc="
  This package provides the official Xen Hypervisor and related utilities
  for starting/stopping/accessing unprivileged domains (domUs)."
@@ -61,6 +66,7 @@ Add_dependency build MesaLib-devel
 Add_dependency build ncurses-devel
 Add_dependency build libgcrypt-devel
 Add_dependency build dev86
+Add_dependency build acpica-utils
 
 pre_build()
 {