diff --git a/devel/rubygem-json/Makefile b/devel/rubygem-json/Makefile
index 567b112652f1..0cea3c7d3b07 100644
--- a/devel/rubygem-json/Makefile
+++ b/devel/rubygem-json/Makefile
@@ -1,18 +1,20 @@
 PORTNAME=	json
 PORTVERSION=	2.19.5
 CATEGORIES=	devel rubygems
 MASTER_SITES=	RG
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	JSON implementation as a Ruby extension in C
 WWW=		https://ruby.github.io/json/ \
 		https://github.com/ruby/json/releases
 
 LICENSE=	BSD2CLAUSE RUBY
 LICENSE_COMB=	dual
 LICENSE_FILE_BSD2CLAUSE=${WRKSRC}/BSDL
 LICENSE_FILE_RUBY=	${WRKSRC}/COPYING
 
-USES=		gem
+USES=		cpe gem
+
+CPE_VENDOR=	ruby-lang
 
 .include <bsd.port.mk>