diff --git a/devel/rubygem-message_bus/Makefile b/devel/rubygem-message_bus/Makefile
index 678b534c4b6c..579b139e93c5 100644
--- a/devel/rubygem-message_bus/Makefile
+++ b/devel/rubygem-message_bus/Makefile
@@ -1,24 +1,24 @@
 PORTNAME=	message_bus
-PORTVERSION=	4.2.0
+PORTVERSION=	4.3.0
 CATEGORIES=	devel rubygems
 MASTER_SITES=	RG
 
 MAINTAINER=	ruby@FreeBSD.org
 COMMENT=	Message bus for rack
 WWW=		https://github.com/discourse/message_bus
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
-RUN_DEPENDS=	rubygem-rack>=1.1.3:www/rubygem-rack
+RUN_DEPENDS=	rubygem-rack>=1.1.3,3:www/rubygem-rack
 
 USES=		cpe gem shebangfix
 USE_RUBY=	yes
 
 NO_ARCH=	yes
 
 CPE_VENDOR=	discourse
 
 SHEBANG_FILES=	examples/chat/docker_container/update_chat
 
 .include <bsd.port.mk>
diff --git a/devel/rubygem-message_bus/distinfo b/devel/rubygem-message_bus/distinfo
index 9cf603a3fa1d..3e948c23e201 100644
--- a/devel/rubygem-message_bus/distinfo
+++ b/devel/rubygem-message_bus/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1648249150
-SHA256 (rubygem/message_bus-4.2.0.gem) = f84185fb1becdc8ef0c56b459ee4e15c947a03ba4222e3e229d039bcf6fcea95
-SIZE (rubygem/message_bus-4.2.0.gem) = 200192
+TIMESTAMP = 1669058361
+SHA256 (rubygem/message_bus-4.3.0.gem) = b37507460b6b5676e63583da662a8e337af9b1fd3df3c3877f0ef6bf96582a0d
+SIZE (rubygem/message_bus-4.3.0.gem) = 199680