diff --git a/biology/vcftools/Makefile b/biology/vcftools/Makefile
index ba3b812a3ed1..6ff8f6c4fa62 100644
--- a/biology/vcftools/Makefile
+++ b/biology/vcftools/Makefile
@@ -1,19 +1,22 @@
 PORTNAME=	vcftools
 PORTVERSION=	0.1.16
 DISTVERSIONPREFIX=	v
+PORTREVISION=	1
 CATEGORIES=	biology
 
 MAINTAINER=	jwb@FreeBSD.org
 COMMENT=	Tools for working with VCF genomics files
 WWW=		https://github.com/vcftools/vcftools
 
 LICENSE=	LGPL3
 
 USES=		autoreconf cpe gmake perl5 pkgconfig
 
 GNU_CONFIGURE=	yes
 USE_GITHUB=	yes
 
+CXXFLAGS+=	-std=c++14
+
 CPE_VENDOR=	vcftools_project
 
 .include <bsd.port.mk>