diff --git a/graphics/diplib/Makefile b/graphics/diplib/Makefile
index e92e5267bbcc..48b0f06c640b 100644
--- a/graphics/diplib/Makefile
+++ b/graphics/diplib/Makefile
@@ -1,29 +1,36 @@
 PORTNAME=	diplib
-DISTVERSION=	3.5.1
+DISTVERSION=	3.6.0
 CATEGORIES=	graphics
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Library and development environment for quantitative image analysis
-WWW=		https://diplib.org/
+WWW=		https://diplib.org/ \
+		https://github.com/DIPlib/diplib
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
 LIB_DEPENDS=	libglfw.so:graphics/glfw
+TEST_DEPENDS=	doctest>0:devel/doctest
 
 USES=		cmake:testing compiler:c++14-lang gl
 USE_GL=		gl glut
 USE_LDCONFIG=	yes
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	DIPlib
 
 CXXFLAGS_powerpc64=	-mvsx
 CMAKE_OFF=	DIP_BUILD_PYDIP
 CMAKE_TESTING_ON=	DIP_ENABLE_DOCTEST
 CMAKE_TESTING_TARGET=	check # one test fails, see https://github.com/DIPlib/diplib/issues/120
 
 CFLAGS_i386=	-msse2 # fix build failure: error: always_inline function '_mm_setzero_si128' requires target feature 'sse2', but would be inlined into function 'defilter_sub4' that is compiled without support for 'sse2'
 CXXFLAGS_i386=	-msse2
 
+# tests as of 3.6.0:
+# [doctest] test cases:  104 |  104 passed | 0 failed | 0 skipped
+# [doctest] assertions: 3686 | 3686 passed | 0 failed |
+# [doctest] Status: SUCCESS!
+
 .include <bsd.port.mk>
diff --git a/graphics/diplib/distinfo b/graphics/diplib/distinfo
index d26760dc4297..c5f5a42784d2 100644
--- a/graphics/diplib/distinfo
+++ b/graphics/diplib/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1720302364
-SHA256 (DIPlib-diplib-3.5.1_GH0.tar.gz) = b887e51021d360d25d80f6075e17212bb952626ab44993580954048f17c880d6
-SIZE (DIPlib-diplib-3.5.1_GH0.tar.gz) = 8772999
+TIMESTAMP = 1779809327
+SHA256 (DIPlib-diplib-3.6.0_GH0.tar.gz) = c9c5ef0c1590dbc428d7f198fecc008b1b3ea54853663a2c33d97e04022af456
+SIZE (DIPlib-diplib-3.6.0_GH0.tar.gz) = 6989402
diff --git a/graphics/diplib/pkg-plist b/graphics/diplib/pkg-plist
index 52373070865d..5fa73cb54625 100644
--- a/graphics/diplib/pkg-plist
+++ b/graphics/diplib/pkg-plist
@@ -1,93 +1,94 @@
 bin/dipview
 include/dip_matlab_interface.h
 include/dip_opencv_interface.h
 include/dip_vigra_interface.h
 include/diplib.h
 include/diplib/accumulators.h
 include/diplib/analysis.h
 include/diplib/binary.h
 include/diplib/border.h
 include/diplib/boundary.h
 include/diplib/chain_code.h
 include/diplib/color.h
 include/diplib/deconvolution.h
 include/diplib/detection.h
 include/diplib/dft.h
 include/diplib/display.h
 include/diplib/distance.h
 include/diplib/distribution.h
 include/diplib/file_io.h
 include/diplib/framework.h
 include/diplib/generation.h
 include/diplib/generic_iterators.h
 include/diplib/geometry.h
 include/diplib/graph.h
 include/diplib/histogram.h
 include/diplib/iterators.h
 include/diplib/kernel.h
 include/diplib/label_map.h
 include/diplib/library/clamp_cast.h
 include/diplib/library/copy_buffer.h
 include/diplib/library/datatype.h
 include/diplib/library/dimension_array.h
 include/diplib/library/error.h
 include/diplib/library/export.h
 include/diplib/library/image.h
 include/diplib/library/image_views.h
 include/diplib/library/numeric.h
 include/diplib/library/operators.h
 include/diplib/library/physical_dimensions.h
 include/diplib/library/sample_iterator.h
 include/diplib/library/stringparams.h
 include/diplib/library/tensor.h
 include/diplib/library/types.h
 include/diplib/linear.h
 include/diplib/lookup_table.h
 include/diplib/mapping.h
 include/diplib/math.h
 include/diplib/measurement.h
 include/diplib/microscopy.h
 include/diplib/morphology.h
 include/diplib/multithreading.h
 include/diplib/neighborlist.h
 include/diplib/nonlinear.h
 include/diplib/overload.h
 include/diplib/pixel_table.h
+include/diplib/polygon.h
 include/diplib/private/constfor.h
 include/diplib/private/pcg_extras.hpp
 include/diplib/private/pcg_random.hpp
 include/diplib/private/pcg_uint128.hpp
 include/diplib/private/readme.txt
 include/diplib/private/robin_growth_policy.h
 include/diplib/private/robin_hash.h
 include/diplib/private/robin_map.h
 include/diplib/private/robin_set.h
 include/diplib/random.h
 include/diplib/regions.h
 include/diplib/saturated_arithmetic.h
 include/diplib/segmentation.h
 include/diplib/simple_file_io.h
 include/diplib/statistics.h
 include/diplib/testing.h
 include/diplib/transform.h
 include/diplib/union_find.h
 include/diplib/viewer/control.h
 include/diplib/viewer/export.h
 include/diplib/viewer/glfw.h
 include/diplib/viewer/glut.h
 include/diplib/viewer/histogram.h
 include/diplib/viewer/image.h
 include/diplib/viewer/link.h
 include/diplib/viewer/manager.h
 include/diplib/viewer/proxy.h
 include/diplib/viewer/slice.h
 include/diplib/viewer/status.h
 include/diplib/viewer/tensor.h
 include/diplib/viewer/viewer.h
 include/dipviewer.h
 lib/cmake/DIPlib/DIPlibConfig.cmake
 lib/cmake/DIPlib/DIPlibConfigVersion.cmake
 lib/cmake/DIPlib/DIPlibTargets-%%CMAKE_BUILD_TYPE%%.cmake
 lib/cmake/DIPlib/DIPlibTargets.cmake
 lib/libDIP.so
 lib/libDIPviewer.so