diff --git a/graphics/mandelbulber/Makefile b/graphics/mandelbulber/Makefile
index 8a540ab04785..52680be5fc37 100644
--- a/graphics/mandelbulber/Makefile
+++ b/graphics/mandelbulber/Makefile
@@ -1,56 +1,55 @@
 PORTNAME=	mandelbulber
-PORTVERSION=	2.25
-PORTREVISION=	1
+PORTVERSION=	2.26
 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
 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 \
+USE_QT=		core widgets network gui multimedia testlib concurrent \
 		qmake_build buildtools_build uitools_build
 INSTALLS_ICONS=	yes
 
 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 49729fca8ae0..22b94c3f897d 100644
--- a/graphics/mandelbulber/distinfo
+++ b/graphics/mandelbulber/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1619105306
-SHA256 (buddhi1980-mandelbulber2-2.25_GH0.tar.gz) = 119d955667e25b53e7910ed3a62b094ba2ba793a4a8dfb4c7154d01fbc7781e6
-SIZE (buddhi1980-mandelbulber2-2.25_GH0.tar.gz) = 105791751
+TIMESTAMP = 1630065227
+SHA256 (buddhi1980-mandelbulber2-2.26_GH0.tar.gz) = e9e2c82f2215e072aa0c9e198af038924a99359117222cd6d4d4d6d6e3745adb
+SIZE (buddhi1980-mandelbulber2-2.26_GH0.tar.gz) = 112020455