Index: head/graphics/png/Makefile
===================================================================
--- head/graphics/png/Makefile	(revision 433580)
+++ head/graphics/png/Makefile	(revision 433581)
@@ -1,39 +1,39 @@
 # Created by: ache
 # $FreeBSD$
 
 PORTNAME=	png
-PORTVERSION=	1.6.27
+PORTVERSION=	1.6.28
 CATEGORIES=	graphics
 MASTER_SITES=	SF/lib${PORTNAME}/lib${PORTNAME}16/${PORTVERSION} \
 		ftp://ftp.simplesystems.org/pub/lib${PORTNAME}/${PORTNAME}/src/lib${PORTNAME}16/
 PATCH_SITES=	SF/apng/lib${PORTNAME}/lib${PORTNAME}16/
 DISTNAME=	lib${PORTNAME}-${PORTVERSION}
 
 MAINTAINER=	portmgr@FreeBSD.org
 COMMENT=	Library for manipulating PNG images
 
 LICENSE=	Libpng
 LICENSE_GROUPS=	FSF GPL OSI
 LICENSE_NAME=	libpng License
 LICENSE_FILE=	${WRKSRC}/LICENSE
 LICENSE_PERMS=	dist-mirror dist-sell pkg-mirror pkg-sell auto-accept
 
 USES=		cpe libtool tar:xz
 CPE_PRODUCT=	libpng
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--with-pkgconfigdir=${PREFIX}/libdata/pkgconfig
 INSTALL_TARGET=	install-strip
 TEST_TARGET=	check-TESTS
 USE_LDCONFIG=	yes
 
 OPTIONS_DEFINE=	APNG
 OPTIONS_DEFAULT=APNG
 APNG_DESC=Enable Animated PNG support
 
 .include <bsd.port.options.mk>
 
 .if ${PORT_OPTIONS:MAPNG} || make(makesum)
 PATCHFILES=	${DISTNAME}-apng.patch.gz
 .endif
 
 .include <bsd.port.mk>
Index: head/graphics/png/distinfo
===================================================================
--- head/graphics/png/distinfo	(revision 433580)
+++ head/graphics/png/distinfo	(revision 433581)
@@ -1,5 +1,5 @@
-TIMESTAMP = 1483036267
-SHA256 (libpng-1.6.27.tar.xz) = fca2ffd97336356cdab9bfa8936b9d6dfd580a70205e5dfead3ac42cb054b57b
-SIZE (libpng-1.6.27.tar.xz) = 984316
-SHA256 (libpng-1.6.27-apng.patch.gz) = 650ca925dae8565ac8882854682ed13954d8832542406269214e3a4d593ac675
-SIZE (libpng-1.6.27-apng.patch.gz) = 10343
+TIMESTAMP = 1486200095
+SHA256 (libpng-1.6.28.tar.xz) = d8d3ec9de6b5db740fefac702c37ffcf96ae46cb17c18c1544635a3852f78f7a
+SIZE (libpng-1.6.28.tar.xz) = 984536
+SHA256 (libpng-1.6.28-apng.patch.gz) = 85cfa524a95b0d1a31012b8ad90536911ea66beb5821459ae92a1d6a68f1ac88
+SIZE (libpng-1.6.28-apng.patch.gz) = 10316
Index: head/graphics/png/pkg-plist
===================================================================
--- head/graphics/png/pkg-plist	(revision 433580)
+++ head/graphics/png/pkg-plist	(revision 433581)
@@ -1,21 +1,21 @@
 bin/libpng-config
 bin/libpng16-config
 bin/png-fix-itxt
 bin/pngfix
 include/libpng16/png.h
 include/libpng16/pngconf.h
 include/libpng16/pnglibconf.h
 include/png.h
 include/pngconf.h
 include/pnglibconf.h
 lib/libpng.a
 lib/libpng.so
 lib/libpng16.a
 lib/libpng16.so
 lib/libpng16.so.16
-lib/libpng16.so.16.27.0
+lib/libpng16.so.16.28.0
 libdata/pkgconfig/libpng.pc
 libdata/pkgconfig/libpng16.pc
 man/man3/libpng.3.gz
 man/man3/libpngpf.3.gz
 man/man5/png.5.gz