Index: head/devel/spin/Makefile
===================================================================
--- head/devel/spin/Makefile	(revision 479776)
+++ head/devel/spin/Makefile	(revision 479777)
@@ -1,53 +1,55 @@
 # Created by: jhanna@home.com
 # $FreeBSD$
 
 PORTNAME=	spin
-PORTVERSION=	6.4.5
+PORTVERSION=	6.4.8
 CATEGORIES=	devel
 MASTER_SITES=	http://spinroot.com/spin/Src/
 DISTNAME=	spin${PORTVERSION:S/.//g}
 DIST_SUBDIR=	spin
 
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	On-the-fly verification system for asynchronous concurrent systems
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
+
+RUN_DEPENDS=	gcc:lang/gcc
 
 WRKSRC=		${WRKDIR}/Spin/Src${PORTVERSION}
 MAKEFILE=	makefile
 ALL_TARGET=	spin
 MAKE_ARGS=	CC="${CC}" CFLAGS="${CFLAGS} -DNXT"
 
 PORTDOCS=	*
 PORTEXAMPLES=	*
 
 OPTIONS_DEFINE=	DOCS EXAMPLES ISPIN
 OPTIONS_DEFAULT=	ISPIN
 OPTIONS_SUB=	yes
 ISPIN_DESC=	Install ispin and TCL/Tk dependency
 ISPIN_USES=	shebangfix tk
 
 SHEBANG_FILES=	../iSpin/ispin.tcl
 tk_OLD_CMD=	/bin/sh
 tk_CMD=		${WISH} -f
 
 post-patch-ISPIN-on:
 	${REINPLACE_CMD} -e "s|exec wish|#exec wish|" ${WRKDIR}/Spin/iSpin/ispin.tcl
 
 do-install:
 	${INSTALL_PROGRAM} ${WRKSRC}/spin ${STAGEDIR}${PREFIX}/bin
 	${INSTALL_MAN} ${WRKDIR}/Spin/Man/spin.1 ${STAGEDIR}${PREFIX}/man/man1
 
 do-install-DOCS-on:
 	@${MKDIR} ${STAGEDIR}${DOCSDIR}
 	cd ${WRKDIR}/Spin/Doc && ${COPYTREE_SHARE} . ${STAGEDIR}${DOCSDIR}
 
 do-install-EXAMPLES-on:
 	@${MKDIR} ${STAGEDIR}${EXAMPLESDIR}
 	cd ${WRKDIR}/Spin/Examples && ${COPYTREE_SHARE} . ${STAGEDIR}${EXAMPLESDIR}
 
 do-install-ISPIN-on:
 	${INSTALL_SCRIPT} ${WRKDIR}/Spin/iSpin/ispin.tcl ${STAGEDIR}${PREFIX}/bin/ispin
 
 .include <bsd.port.mk>
Index: head/devel/spin/distinfo
===================================================================
--- head/devel/spin/distinfo	(revision 479776)
+++ head/devel/spin/distinfo	(revision 479777)
@@ -1,2 +1,3 @@
-SHA256 (spin/spin645.tar.gz) = 44081282eb63cd9df763ebbcf8bad19dbeefecbebf8ac2cc090ea92e2ab71875
-SIZE (spin/spin645.tar.gz) = 672549
+TIMESTAMP = 1536942338
+SHA256 (spin/spin648.tar.gz) = 0035bb114157a759e047c7f94ede0a3d7149003893914c9bbdff45e074ab6ae7
+SIZE (spin/spin648.tar.gz) = 544622