Index: head/print/R-cran-knitr/Makefile
===================================================================
--- head/print/R-cran-knitr/Makefile	(revision 525783)
+++ head/print/R-cran-knitr/Makefile	(revision 525784)
@@ -1,25 +1,25 @@
 # Created by: TAKATSU Tomonari <tota@FreeBSD.org>
 # $FreeBSD$
 
 PORTNAME=	knitr
-PORTVERSION=	1.27
+PORTVERSION=	1.28
 CATEGORIES=	print
 DISTNAME=	${PORTNAME}_${PORTVERSION}
 
 MAINTAINER=	tota@FreeBSD.org
 COMMENT=	General-Purpose Package for Dynamic Report Generation in R
 
 LICENSE=	GPLv2+
 
 CRAN_DEPENDS=	R-cran-evaluate>=0.10:devel/R-cran-evaluate \
 		R-cran-highr>0:textproc/R-cran-highr \
 		R-cran-markdown>0:textproc/R-cran-markdown \
 		R-cran-stringr>=0.6:textproc/R-cran-stringr \
 		R-cran-yaml>=2.1.19:textproc/R-cran-yaml \
 		R-cran-xfun>0:misc/R-cran-xfun
 BUILD_DEPENDS=	${CRAN_DEPENDS}
 RUN_DEPENDS=	${CRAN_DEPENDS}
 
 USES=	cran:auto-plist
 
 .include <bsd.port.mk>
Index: head/print/R-cran-knitr/distinfo
===================================================================
--- head/print/R-cran-knitr/distinfo	(revision 525783)
+++ head/print/R-cran-knitr/distinfo	(revision 525784)
@@ -1,3 +1,3 @@
-TIMESTAMP = 1579343187
-SHA256 (knitr_1.27.tar.gz) = af3de6a30cae709d81ee8f559a9ace0d3cd27d2a2de850469b6077d3edd3de0a
-SIZE (knitr_1.27.tar.gz) = 884850
+TIMESTAMP = 1581401267
+SHA256 (knitr_1.28.tar.gz) = 05ee01da31d715bf24793efb3e4ef3bb3101ef1e1ab2d760c645fc5b9d40232a
+SIZE (knitr_1.28.tar.gz) = 884866