Index: head/textproc/rubygem-sass/Makefile
===================================================================
--- head/textproc/rubygem-sass/Makefile	(revision 447386)
+++ head/textproc/rubygem-sass/Makefile	(revision 447387)
@@ -1,22 +1,24 @@
 # Created by: Steve Wills <swills@FreeBSD.org>
 # $FreeBSD$
 
 PORTNAME=	sass
-PORTVERSION=	3.4.25
+PORTVERSION=	3.5.1
 CATEGORIES=	textproc ruby
 MASTER_SITES=	RG
 
 MAINTAINER=	ruby@FreeBSD.org
 COMMENT=	Sass is an extension of CSS3
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/MIT-LICENSE
 
+RUN_DEPENDS=	rubygem-sass-listen>=4.0.0:textproc/rubygem-sass-listen
+
 NO_ARCH=	yes
-USE_RUBY=	yes
 USES=		gem shebangfix
+USE_RUBY=	yes
 SHEBANG_FILES=	extra/sass-spec-ref.sh
 
 PLIST_FILES=	bin/sass bin/sass-convert bin/scss
 
 .include <bsd.port.mk>
Index: head/textproc/rubygem-sass/distinfo
===================================================================
--- head/textproc/rubygem-sass/distinfo	(revision 447386)
+++ head/textproc/rubygem-sass/distinfo	(revision 447387)
@@ -1,3 +1,3 @@
-TIMESTAMP = 1499518820
-SHA256 (rubygem/sass-3.4.25.gem) = 7cd272c39bfa3a52fbfc2685f38697099971a8dc933e1c10a384bf862067d74d
-SIZE (rubygem/sass-3.4.25.gem) = 352768
+TIMESTAMP = 1501795217
+SHA256 (rubygem/sass-3.5.1.gem) = 8b3e2cd24e545e4753f7aaebfb789b1e3a6727921a40bf3b9aef4eda727b4cb8
+SIZE (rubygem/sass-3.5.1.gem) = 318976