diff --git a/devel/ocaml-type_conv/Makefile b/devel/ocaml-type_conv/Makefile
index 858cd30ea401..295b58439b56 100644
--- a/devel/ocaml-type_conv/Makefile
+++ b/devel/ocaml-type_conv/Makefile
@@ -1,41 +1,44 @@
 PORTNAME=	type_conv
 PORTVERSION=	113.00.02
 PORTREVISION=	3
 CATEGORIES=	devel
 MASTER_SITES=	https://ocaml.janestreet.com/ocaml-core/${PORTVERSION:R}/files/
 PKGNAMEPREFIX=	ocaml-
 
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Type conversion routines for OCaml
 WWW=		https://janestreet.github.io/
 
 LICENSE=	APACHE20 BSD3CLAUSE
 LICENSE_COMB=	multi
 
+DEPRECATED=	Deprecated, upstream recommends migrating to devel/ocaml-ppxlib
+EXPIRATION_DATE=2025-03-31
+
 BUILD_DEPENDS=	ocamlbuild:devel/ocaml-ocamlbuild
 
 USES=		gmake ocaml:camlp4,findplist
 
 OPTIONS_DEFINE=	DOCS
 
 CONFIGURE_ARGS=	--disable-docs --prefix ${PREFIX}
 HAS_CONFIGURE=	yes
 MAKE_JOBS_UNSAFE=	yes
 
 DOCSDIR=	${OCAML_DOCSDIR}/${PORTNAME}
 PORTDOCS=	*
 
 .include <bsd.port.options.mk>
 
 .if ${ARCH} == powerpc
 USE_BINUTILS=	yes
 .endif
 
 post-install:
 	${STRIP_CMD} ${STAGEDIR}${PREFIX}/${OCAML_SITELIBDIR}/type_conv/pa_type_conv.cmxs
 
 post-install-DOCS-on:
 	${MKDIR} ${STAGEDIR}${DOCSDIR}/
 	cd ${WRKSRC}/ && ${INSTALL_DATA} CHANGES.md README.md ${STAGEDIR}${DOCSDIR}/
 
 .include <bsd.port.mk>