diff --git a/textproc/rubygem-liquid4/Makefile b/textproc/rubygem-liquid4/Makefile
index 2ed2df81693f..7a0f88e676d5 100644
--- a/textproc/rubygem-liquid4/Makefile
+++ b/textproc/rubygem-liquid4/Makefile
@@ -1,20 +1,27 @@
 PORTNAME=	liquid
 PORTVERSION=	4.0.4
+PORTREVISION=	1
 CATEGORIES=	textproc rubygems
 MASTER_SITES=	RG
 PKGNAMESUFFIX=	4
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Library for rendering safe templates
 WWW=		https://shopify.github.io/liquid/
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 USES=		gem
 
 NO_ARCH=	yes
 
 PORTSCOUT=	limit:^4\.
 
-.include <bsd.port.mk>
+.include <bsd.port.pre.mk>
+
+.if ${RUBY_VER} >= 4.0
+RUN_DEPENDS+=	rubygem-bigdecimal>=0:math/rubygem-bigdecimal
+.endif
+
+.include <bsd.port.post.mk>