diff --git a/sysutils/rubygem-fluentd/Makefile b/sysutils/rubygem-fluentd/Makefile
index c9c33bfe54bd..d39c98bd5350 100644
--- a/sysutils/rubygem-fluentd/Makefile
+++ b/sysutils/rubygem-fluentd/Makefile
@@ -1,43 +1,44 @@
 PORTNAME=	fluentd
 PORTVERSION=	1.13.3
+PORTREVISION=	1
 CATEGORIES=	sysutils rubygems
 MASTER_SITES=	RG
 
 MAINTAINER=	girgen@FreeBSD.org
 COMMENT=	Fluent event collector
 
 LICENSE=	APACHE20
 
 RUN_DEPENDS=	\
 	rubygem-bundler>=0:sysutils/rubygem-bundler \
 	rubygem-cool.io>=1.4.5<2.0.0:devel/rubygem-cool.io \
-	rubygem-http_parser.rb>=0.5.1<0.8.0:net/rubygem-http_parser.rb \
+	rubygem-http_parser.rb>=0.5.1<0.9.0:net/rubygem-http_parser.rb \
 	rubygem-msgpack>=1.3.1<2.0.0:devel/rubygem-msgpack \
 	rubygem-serverengine>=2.2.2<3.0.0:net/rubygem-serverengine \
 	rubygem-sigdump>=0.2.2<0.3:devel/rubygem-sigdump \
 	rubygem-strptime>=0.2.2<1.0.0:devel/rubygem-strptime \
 	rubygem-tzinfo1>=1.0<3.0:devel/rubygem-tzinfo1 \
 	rubygem-tzinfo-data>=1.0<2:devel/rubygem-tzinfo-data \
 	rubygem-webrick>=1.4.2<1.8.0:www/rubygem-webrick \
 	rubygem-yajl-ruby>=1.0<2:devel/rubygem-yajl-ruby
 
 PLIST_FILES=	bin/fluent-cap-ctl bin/fluent-cat bin/fluent-ctl \
 		bin/fluent-debug bin/fluent-gem bin/fluentd \
 		bin/fluent-binlog-reader bin/fluent-ca-generate \
 		bin/fluent-plugin-config-format bin/fluent-plugin-generate \
 		"@sample etc/fluentd/fluent.conf.sample"
 PLIST_DIRS=	etc/fluentd/plugin
 USES=		gem
 USE_RUBY=	yes
 USE_RC_SUBR=	fluentd
 USERS=		fluentd
 GROUPS=		fluentd
 SUB_LIST+=	USER=${USERS} GROUP=${GROUPS} RUBY=${RUBY}
 NO_ARCH=	YES
 NO_LATEST_LINK=	YES
 
 post-install:
 	${MKDIR} ${STAGEDIR}${PREFIX}/etc/fluentd/plugin
 	${CP} ${WRKSRC}/fluent.conf.sample ${STAGEDIR}${PREFIX}/etc/fluentd/
 
 .include <bsd.port.mk>
diff --git a/sysutils/rubygem-fluentd/files/patch-gemspec b/sysutils/rubygem-fluentd/files/patch-gemspec
new file mode 100644
index 000000000000..aff3f37871dd
--- /dev/null
+++ b/sysutils/rubygem-fluentd/files/patch-gemspec
@@ -0,0 +1,11 @@
+--- fluentd.gemspec.orig	2021-09-26 15:36:14 UTC
++++ fluentd.gemspec
+@@ -29,7 +29,7 @@ Gem::Specification.new do |s|
+       s.add_runtime_dependency(%q<yajl-ruby>.freeze, ["~> 1.0"])
+       s.add_runtime_dependency(%q<cool.io>.freeze, [">= 1.4.5", "< 2.0.0"])
+       s.add_runtime_dependency(%q<serverengine>.freeze, [">= 2.2.2", "< 3.0.0"])
+-      s.add_runtime_dependency(%q<http_parser.rb>.freeze, [">= 0.5.1", "< 0.8.0"])
++      s.add_runtime_dependency(%q<http_parser.rb>.freeze, [">= 0.5.1", "< 0.9.0"])
+       s.add_runtime_dependency(%q<sigdump>.freeze, ["~> 0.2.2"])
+       s.add_runtime_dependency(%q<tzinfo>.freeze, [">= 1.0", "< 3.0"])
+       s.add_runtime_dependency(%q<tzinfo-data>.freeze, ["~> 1.0"])