diff --git a/textproc/rubygem-case_transform61/Makefile b/textproc/rubygem-case_transform61/Makefile
index d999a0e127ff..759bff943bb1 100644
--- a/textproc/rubygem-case_transform61/Makefile
+++ b/textproc/rubygem-case_transform61/Makefile
@@ -1,19 +1,22 @@
 PORTNAME=	case_transform
 PORTVERSION=	0.2
 CATEGORIES=	textproc rubygems
 MASTER_SITES=	RG
 PKGNAMESUFFIX=	61
 
 MAINTAINER=	bofh@FreeBSD.org
 COMMENT=	Extraction of the key_transform abilities of ActiveModelSerializers
 WWW=		https://github.com/NullVoxPopuli/case_transform
 
 LICENSE=	MIT
 
+DEPRECATED=	Uses EOL version 6.1.X of Rails
+EXPIRATION_DATE=2025-04-03
+
 RUN_DEPENDS=	rubygem-activesupport61>0:devel/rubygem-activesupport61
 
 USES=		gem
 
 NO_ARCH=	yes
 
 .include <bsd.port.mk>