diff --git a/graphics/mandelbulber/Makefile b/graphics/mandelbulber/Makefile
index 16def2c66b63..bd9ce91e3a38 100644
--- a/graphics/mandelbulber/Makefile
+++ b/graphics/mandelbulber/Makefile
@@ -1,55 +1,55 @@
 PORTNAME=	mandelbulber
-PORTVERSION=	2.27
+PORTVERSION=	2.28
 CATEGORIES=	graphics
 
 MAINTAINER=	amdmi3@FreeBSD.org
 COMMENT=	3D Mandelbrot fractal renderer
 
 LICENSE=	GPLv3+
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 LIB_DEPENDS=	libgsl.so:math/gsl \
 		libpng.so:graphics/png \
 		libtiff.so:graphics/tiff \
 		liblzo2.so:archivers/lzo2 \
 		libOpenEXR.so:graphics/openexr
 BUILD_DEPENDS=	${LOCALBASE}/include/stb/stb_image.h:devel/stb
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	buddhi1980
 GH_PROJECT=	${PORTNAME}2
 
 USES=		cmake compiler:c++11-lang gnome jpeg localbase:ldflags \
 		pkgconfig qt:5
 USE_QT=		core widgets network gui multimedia testlib concurrent \
 		qmake_build buildtools_build uitools_build
 
 CMAKE_SOURCE_PATH=	${WRKSRC}/mandelbulber2/cmake
 
 PORTDOCS=	CONTRIBUTING.md README.md RESOURCES.md
 PORTDATA=	*
 DATADIR=	${PREFIX}/share/${PORTNAME}2
 
 OPTIONS_DEFINE=	OPENCL OPENMP DOCS
 OPTIONS_EXCLUDE=	OPENMP  # not properly supported yet
 
 OPENCL_BUILD_DEPENDS=	opencl>=0:devel/opencl
 
 post-extract:
 	@${RM} -rf ${WRKSRC}/mandelbulber2/third-party
 
 post-patch-OPENMP-off:
 	@${REINPLACE_CMD} -e 's|-fopenmp||' \
 		${CMAKE_SOURCE_PATH}/CMakeLists.txt
 
 post-patch-OPENCL-off:
 	@${REINPLACE_CMD} -e '/find_package.*OpenCL/ d' \
 		${CMAKE_SOURCE_PATH}/CMakeLists.txt
 
 post-install-DOCS-on:
 	@${MKDIR} ${STAGEDIR}${DOCSDIR}
 .for f in ${PORTDOCS}
 	${INSTALL_DATA} ${WRKSRC}/${f} ${STAGEDIR}${DOCSDIR}/
 .endfor
 
 .include <bsd.port.mk>
diff --git a/graphics/mandelbulber/distinfo b/graphics/mandelbulber/distinfo
index eab064bc8327..44ab9fd24751 100644
--- a/graphics/mandelbulber/distinfo
+++ b/graphics/mandelbulber/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1645451901
-SHA256 (buddhi1980-mandelbulber2-2.27_GH0.tar.gz) = ccb70287442a7f1cf1d49bfbdaa15aaebdf68cef8eb9bec9a502d8e973e4ff5f
-SIZE (buddhi1980-mandelbulber2-2.27_GH0.tar.gz) = 117659399
+TIMESTAMP = 1657909876
+SHA256 (buddhi1980-mandelbulber2-2.28_GH0.tar.gz) = 1cffb300916c641d012b1f0b4881dae28f769bb0e5f00f3f56be81ad977736ed
+SIZE (buddhi1980-mandelbulber2-2.28_GH0.tar.gz) = 121188922