diff --git a/www/plugger/Makefile b/www/plugger/Makefile
--- a/www/plugger/Makefile
+++ b/www/plugger/Makefile
@@ -8,6 +8,9 @@
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Multimedia front-end plugin for Mozilla or Opera
 
+DEPRECATED=	Uses incompatible plugin interface NPAPI
+EXPIRATION_DATE=2021-12-31
+
 USES=		webplugin:native xorg
 USE_XORG=	xext xt sm ice xext x11
 GNU_CONFIGURE=	yes