--- /usr/portage/sci-biology/unafold/unafold-3.8-r1.ebuild	2015-12-30 01:37:27.216039662 +0900
+++ /var/portage/pkalin/sci-biology/unafold/unafold-3.8-r2.ebuild	2016-10-16 16:41:36.481717920 +0900
@@ -1,4 +1,4 @@
-# Copyright 1999-2013 Gentoo Foundation
+# Copyright 1999-2016 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 # $Id$
 
@@ -13,15 +13,16 @@
 LICENSE="unafold"
 SLOT="0"
 KEYWORDS="~amd64 ~x86"
-IUSE="custom-cflags"
+IUSE="custom-cflags +postscript"
 
-DEPEND=""
+DEPEND="postscript? ( >=sci-biology/mfold_util-4.7 )"
 RDEPEND="${DEPEND}"
 
 src_prepare() {
 	# recommended in README
 	use custom-cflags || append-flags -O3
 
+	# version was not updated upstream apparently
 	sed \
 		-e 's:hybrid (UNAFold) 3.7:hybrid (UNAFold) 3.8:g' \
 		-i tests/hybrid.tml || die