diff --git a/devel/rubygem-sdoc/Makefile b/devel/rubygem-sdoc/Makefile
index 74fab5d09bc6..5bd637a541b5 100644
--- a/devel/rubygem-sdoc/Makefile
+++ b/devel/rubygem-sdoc/Makefile
@@ -1,22 +1,22 @@
 # Created by: Steve Wills <swills@FreeBSD.org>
 
 PORTNAME=	sdoc
-PORTVERSION=	2.2.0
+PORTVERSION=	2.3.1
 CATEGORIES=	devel rubygems
 MASTER_SITES=	RG
 
 MAINTAINER=	ruby@FreeBSD.org
 COMMENT=	Create rdoc html with javascript search index
 
 LICENSE=	MIT
 
 RUN_DEPENDS=	rubygem-rdoc>=5.0:devel/rubygem-rdoc
 
 USES=		gem
 USE_RUBY=	yes
 
 NO_ARCH=	yes
 
 PLIST_FILES=	bin/sdoc bin/sdoc-merge
 
 .include <bsd.port.mk>
diff --git a/devel/rubygem-sdoc/distinfo b/devel/rubygem-sdoc/distinfo
index 4791092f7c32..03f7d5e7d2ec 100644
--- a/devel/rubygem-sdoc/distinfo
+++ b/devel/rubygem-sdoc/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1625323763
-SHA256 (rubygem/sdoc-2.2.0.gem) = 6f341375a03cb8f0fbbaf7d89ab959ab69f6f184b5ca3e007f5dad47bca8e27b
-SIZE (rubygem/sdoc-2.2.0.gem) = 291840
+TIMESTAMP = 1648249182
+SHA256 (rubygem/sdoc-2.3.1.gem) = 4f3c2f1922e5a58a15b7847b4ba9a439b18aa03c5a574f335ce25f87f91aaad0
+SIZE (rubygem/sdoc-2.3.1.gem) = 292352
diff --git a/devel/rubygem-sdoc/files/patch-gemspec b/devel/rubygem-sdoc/files/patch-gemspec
new file mode 100644
index 000000000000..abba0aa139bf
--- /dev/null
+++ b/devel/rubygem-sdoc/files/patch-gemspec
@@ -0,0 +1,11 @@
+--- sdoc.gemspec.orig	2022-03-30 12:49:50 UTC
++++ sdoc.gemspec
+@@ -26,7 +26,7 @@ Gem::Specification.new do |s|
+   end
+ 
+   if s.respond_to? :add_runtime_dependency then
+-    s.add_runtime_dependency(%q<rdoc>.freeze, [">= 5.0", "< 6.4.0"])
++    s.add_runtime_dependency(%q<rdoc>.freeze, [">= 5.0"])
+   else
+     s.add_dependency(%q<rdoc>.freeze, [">= 5.0", "< 6.4.0"])
+   end