diff --git a/graphics/rubygem-gruff/Makefile b/graphics/rubygem-gruff/Makefile
index d25fbbab3a59..de204b2cb227 100644
--- a/graphics/rubygem-gruff/Makefile
+++ b/graphics/rubygem-gruff/Makefile
@@ -1,22 +1,22 @@
 # Created by: ijliao
 
 PORTNAME=	gruff
-PORTVERSION=	0.14.0
+PORTVERSION=	0.15.0
 CATEGORIES=	graphics rubygems
 MASTER_SITES=	RG
 
 MAINTAINER=	ruby@FreeBSD.org
 COMMENT=	Beautiful graphing library for Ruby using RMagick
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/MIT-LICENSE
 
 RUN_DEPENDS=	rubygem-histogram>=0:graphics/rubygem-histogram \
-		rubygem-rmagick>=0:graphics/rubygem-rmagick
+		rubygem-rmagick>=4.2:graphics/rubygem-rmagick
 
 USES=		gem
 USE_RUBY=	yes
 
 NO_ARCH=	yes
 
 .include <bsd.port.mk>
diff --git a/graphics/rubygem-gruff/distinfo b/graphics/rubygem-gruff/distinfo
index a4a3380c1514..188021058ecf 100644
--- a/graphics/rubygem-gruff/distinfo
+++ b/graphics/rubygem-gruff/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1626542076
-SHA256 (rubygem/gruff-0.14.0.gem) = 1443e8a129bebfe90ec2621e44c0dffa16444a4ede9dbbcd73169929b1ae0b1a
-SIZE (rubygem/gruff-0.14.0.gem) = 230912
+TIMESTAMP = 1650970341
+SHA256 (rubygem/gruff-0.15.0.gem) = 92919a864fff0081fcc874b036e6ffb76fee53c3b4b5452056b61e41101767c5
+SIZE (rubygem/gruff-0.15.0.gem) = 230400