diff --git a/www/rubygem-rdf/Makefile b/www/rubygem-rdf/Makefile
index f11c55e128f7..7696cf1ff7e4 100644
--- a/www/rubygem-rdf/Makefile
+++ b/www/rubygem-rdf/Makefile
@@ -1,24 +1,24 @@
 # Created by: TAKATSU Tomonari <tota@FreeBSD.org>
 
 PORTNAME=	rdf
-PORTVERSION=	3.1.12
+PORTVERSION=	3.1.13
 CATEGORIES=	www rubygems
 MASTER_SITES=	RG
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Pure-Ruby library for working with RDF data
 
 LICENSE=	UNLICENSE
 LICENSE_FILE=	${WRKSRC}/UNLICENSE
 
 RUN_DEPENDS=	rubygem-hamster>=3.0<4:devel/rubygem-hamster \
 		rubygem-link_header>=0.0.8<1:www/rubygem-link_header
 
 USES=		gem
 USE_RUBY=	yes
 
 NO_ARCH=	yes
 
 PLIST_FILES=	bin/rdf
 
 .include <bsd.port.mk>
diff --git a/www/rubygem-rdf/distinfo b/www/rubygem-rdf/distinfo
index 3772bea38233..a8e33bbde74e 100644
--- a/www/rubygem-rdf/distinfo
+++ b/www/rubygem-rdf/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1613738861
-SHA256 (rubygem/rdf-3.1.12.gem) = 916c95b36980235f290b9e50f6389070aa7cdc7a2dd5527bc80d832aa5cb45ea
-SIZE (rubygem/rdf-3.1.12.gem) = 151552
+TIMESTAMP = 1618321036
+SHA256 (rubygem/rdf-3.1.13.gem) = a394bee1e5833b71a98e5fad6c580323c2073df40bb51bc09f62748694c1c056
+SIZE (rubygem/rdf-3.1.13.gem) = 151552