diff --git a/databases/rubygem-active_model_serializers61/Makefile b/databases/rubygem-active_model_serializers61/Makefile
index bb7b8ac85132..4b2575713e0e 100644
--- a/databases/rubygem-active_model_serializers61/Makefile
+++ b/databases/rubygem-active_model_serializers61/Makefile
@@ -1,23 +1,26 @@
 PORTNAME=	active_model_serializers
 PORTVERSION=	0.10.14
 CATEGORIES=	databases rubygems
 MASTER_SITES=	RG
 PKGNAMESUFFIX=	61
 
 MAINTAINER=	bofh@FreeBSD.org
 COMMENT=	Conventions-based JSON generation for Rails
 WWW=		https://github.com/rails-api/active_model_serializers
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/MIT-LICENSE
 
+DEPRECATED=	Ruby on Rails 6.1.x reached EOL on 2024-10-01
+EXPIRATION_DATE=	2025-01-23
+
 RUN_DEPENDS=	rubygem-activemodel61>=4.1<7.1:databases/rubygem-activemodel61 \
 		rubygem-actionpack61>=4.1<7.1:www/rubygem-actionpack61 \
 		rubygem-case_transform61>=0.2:textproc/rubygem-case_transform61 \
 		rubygem-jsonapi-renderer>=0.1.1<0.3:devel/rubygem-jsonapi-renderer
 
 USES=		gem
 
 NO_ARCH=	yes
 
 .include <bsd.port.mk>