diff --git a/textproc/docproj/Makefile b/textproc/docproj/Makefile
index 7ae6dc849a39..c855888fe6c8 100644
--- a/textproc/docproj/Makefile
+++ b/textproc/docproj/Makefile
@@ -1,32 +1,34 @@
 PORTNAME=	docproj
-PORTVERSION=	4.1.7
+PORTVERSION=	4.1.8
 CATEGORIES=	textproc
 
 MAINTAINER=	doceng@FreeBSD.org
 COMMENT=	Meta-port for the FreeBSD Documentation Project
 WWW=		https://www.freebsd.org/docproj
 
 RUN_DEPENDS=	asciidoctor:textproc/rubygem-asciidoctor \
+		gnuplot-lite>0:math/gnuplot-lite \
 		gohugo>=0.115.4,1:www/gohugo \
 		rougify:textproc/rubygem-rouge \
+		rubygem-asciidoctor-diagram>0:textproc/rubygem-asciidoctor-diagram
 
 USES=		metaport
 
 OPTIONS_DEFINE=	EPUB FONTS-CJK GIT IGOR PDF TRANSLATOR VALE
 OPTIONS_DEFAULT=	GIT IGOR PDF TRANSLATOR VALE
 
 EPUB_DESC=	EPUB document support
 FONTS-CJK_DESC=	Required CJK fonts to build PDF files
 IGOR_DESC=		Igor automated proofreader for documentation
 TRANSLATOR_DESC=	Tools for translators
 VALE_DESC=	VALE Linting support
 
 EPUB_RUN_DEPENDS=	asciidoctor-epub3:textproc/rubygem-asciidoctor-epub3
 FONTS-CJK_RUN_DEPENDS=	docproj-fonts-cjk>0:textproc/docproj-fonts-cjk
 GIT_RUN_DEPENDS=	git:devel/git
 IGOR_RUN_DEPENDS=	igor:textproc/igor
 PDF_RUN_DEPENDS=	asciidoctor-pdf:textproc/rubygem-asciidoctor-pdf
 TRANSLATOR_RUN_DEPENDS=	po4a>=0.67:textproc/po4a
 VALE_RUN_DEPENDS=	vale>0:textproc/vale
 
 .include <bsd.port.mk>