diff --git a/devel/rubygem-rdoc/Makefile b/devel/rubygem-rdoc/Makefile
index 46b6d1e1586c..8395582d4dd1 100644
--- a/devel/rubygem-rdoc/Makefile
+++ b/devel/rubygem-rdoc/Makefile
@@ -1,31 +1,32 @@
 PORTNAME=	rdoc
-PORTVERSION=	6.14.2
+PORTVERSION=	6.15.0
 CATEGORIES=	devel rubygems
 MASTER_SITES=	RG
 
 MAINTAINER=	ruby@FreeBSD.org
 COMMENT=	RDoc produces HTML and command-line documentation for Ruby projects
 WWW=		https://ruby.github.io/rdoc/ \
 		https://github.com/ruby/rdoc
 
 LICENSE=	GPLv2 RUBY
 LICENSE_COMB=	dual
 LICENSE_FILE_RUBY=	${WRKSRC}/LICENSE.rdoc
 
 RUN_DEPENDS=	rubygem-erb>=0:devel/rubygem-erb \
-		rubygem-psych>=4.0.0:textproc/rubygem-psych
+		rubygem-psych>=4.0.0:textproc/rubygem-psych \
+		rubygem-tsort>=0:devel/rubygem-tsort
 
 USES=		cpe gem
 
 NO_ARCH=	yes
 
 PLIST_FILES=	bin/rdoc \
 		bin/ri \
 		share/man/man1/ri.1.gz
 
 CPE_VENDOR=	ruby-lang
 
 post-install:
 	${INSTALL_DATA} ${WRKSRC}/man/ri.1 ${STAGEDIR}${PREFIX}/share/man/man1
 
 .include <bsd.port.mk>
diff --git a/devel/rubygem-rdoc/distinfo b/devel/rubygem-rdoc/distinfo
index a71d9c3f74a3..f89161c57a53 100644
--- a/devel/rubygem-rdoc/distinfo
+++ b/devel/rubygem-rdoc/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1752266268
-SHA256 (rubygem/rdoc-6.14.2.gem) = 9fdd44df130f856ae70cc9a264dfd659b9b40de369b16581f4ab746e42439226
-SIZE (rubygem/rdoc-6.14.2.gem) = 671744
+TIMESTAMP = 1759774973
+SHA256 (rubygem/rdoc-6.15.0.gem) = 0f0e68864969e77c2acd4063a9585baa5216d362701d827a93feaa9cbae78b05
+SIZE (rubygem/rdoc-6.15.0.gem) = 673280