Index: head/textproc/rubygem-asciidoctor-plantuml/Makefile
===================================================================
--- head/textproc/rubygem-asciidoctor-plantuml/Makefile	(revision 516538)
+++ head/textproc/rubygem-asciidoctor-plantuml/Makefile	(revision 516539)
@@ -1,21 +1,21 @@
 # Created by: Po-Chuan Hsieh <sunpoet@FreeBSD.org>
 # $FreeBSD$
 
 PORTNAME=	asciidoctor-plantuml
 PORTVERSION=	0.0.9
 CATEGORIES=	textproc rubygems
 MASTER_SITES=	RG
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Asciidoctor PlantUML extension
 
 LICENSE=	MIT
 
-RUN_DEPENDS=	rubygem-asciidoctor>=1.5.6:textproc/rubygem-asciidoctor
+RUN_DEPENDS=	rubygem-asciidoctor>=1.5.6<3.0.0:textproc/rubygem-asciidoctor
 
 USES=		gem
 USE_RUBY=	yes
 
 NO_ARCH=	yes
 
 .include <bsd.port.mk>