diff --git a/lang/spidermonkey78/Makefile b/lang/spidermonkey78/Makefile
index 73602a1f431f..b6aa6c90ba80 100644
--- a/lang/spidermonkey78/Makefile
+++ b/lang/spidermonkey78/Makefile
@@ -12,6 +12,9 @@ COMMENT=	Standalone JavaScript based from Mozilla 78-esr
 LICENSE=	MPL20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
+DEPRECATED=	End of life, last release in October 2021 and users are recommended to upgrade to 91
+EXPIRATION_DATE=2022-09-30
+
 BUILD_DEPENDS=	${LOCALBASE}/bin/python${PYTHON3_DEFAULT}:lang/python${PYTHON3_DEFAULT:S/.//g} \
 		${RUST_DEFAULT}>=1.35:lang/${RUST_DEFAULT} \
 		autoconf2.13:devel/autoconf2.13 \