diff --git a/math/freefem++/Makefile b/math/freefem++/Makefile
index 4ad0d1170861..65e59dd1e63a 100644
--- a/math/freefem++/Makefile
+++ b/math/freefem++/Makefile
@@ -1,75 +1,74 @@
 PORTNAME=	freefem++
 DISTVERSIONPREFIX=	v
-DISTVERSION=	4.12
-PORTREVISION=	1
+DISTVERSION=	4.13
 CATEGORIES=	math science
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Partial differential equation solver
 WWW=		https://freefem.org/index.html
 
 LICENSE=	LGPL3
 
 BUILD_DEPENDS=	bash:shells/bash		\
 		gmm++>0:math/gmm++		\
 		pipe:misc/pipe			\
 		tetgen:math/tetgen
 LIB_DEPENDS=	libhdf5.so:science/hdf5		\
 		libamd.so:math/suitesparse-amd	\
 		libcholmod.so:math/suitesparse-cholmod \
 		libcolamd.so:math/suitesparse-colamd \
 		libumfpack.so:math/suitesparse-umfpack	\
 		libarpack.so:math/arpack-ng	\
 		libfftw3.so:math/fftw3		\
 		libgsl.so:math/gsl		\
 		libipopt.so:math/ipopt		\
 		libmetis.so:math/metis		\
 		libscotch.so:cad/scotch		\
 		libcmumps.so:math/mumps		\
 		libnlopt.so:math/nlopt		\
 		libsuperlu.so:math/superlu	\
 		libsz.so:science/libaec
 RUN_DEPENDS=	bash:shells/bash		\
 		pipe:misc/pipe
 
 USES=		autoreconf bison blaslapack:openblas compiler:c++14-lang fortran	\
 		gl gmake localbase perl5 pkgconfig shebangfix xorg
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	FreeFem
 GH_PROJECT=	FreeFem-sources
 
 SHEBANG_GLOB=	ff-pkg-download.in
 SHEBANG_FILES=	examples/CheckAllEdp ./examples/misc/speedtest.sh
 
 CPPFLAGS+=	-I${LOCALBASE}/include/superlu
 .if !defined{WITH_DEBUG}
 LDFLAGS+=	-s
 .endif
 
 GNU_CONFIGURE=	yes
 CONFIGURE_ENV=	CNOFLAGS="${CFLAGS}" LIBS=-lz
 CONFIGURE_ARGS=	--disable-download		\
 		--without-mpi			\
 		--with-blas=${BLASLIB}		\
 		--with-lapack=${LAPACKLIB}
 
 USE_GL=		gl glu glut
 
 OPTIONS_DEFINE=	EXAMPLES
 OPTIONS_DEFAULT=EXAMPLES
 
 PORTEXAMPLES=	*
 
 PLIST_SUB=	VER=${PORTVERSION}
 DATADIR=	${PREFIX}/share/FreeFEM/${PORTVERSION}
 
-TEST_TARGET=	check
+TEST_TARGET=	check # 1 test fails, see https://github.com/FreeFem/FreeFem-sources/issues/281
 
 pre-configure:
 	@${REINPLACE_CMD} -e 's|-llapack|${LAPACKLIB}|' ${WRKSRC}/configure.ac
 
 post-install:
 	@${MV} ${STAGEDIR}${DATADIR}/examples ${STAGEDIR}${EXAMPLESDIR}
 
 .include <bsd.port.mk>
diff --git a/math/freefem++/distinfo b/math/freefem++/distinfo
index 4dcc703bb3e3..c36323c140a4 100644
--- a/math/freefem++/distinfo
+++ b/math/freefem++/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1680064481
-SHA256 (FreeFem-FreeFem-sources-v4.12_GH0.tar.gz) = 291c5f46761711d6303914f9c4f165fd85a7b7b69141f7473e0b6484ce6ab0f5
-SIZE (FreeFem-FreeFem-sources-v4.12_GH0.tar.gz) = 12885961
+TIMESTAMP = 1687080379
+SHA256 (FreeFem-FreeFem-sources-v4.13_GH0.tar.gz) = d296adc42c6b0cc5f148c44b00bea15939d6c0dbe391613dea8a0693c2c0e3b7
+SIZE (FreeFem-FreeFem-sources-v4.13_GH0.tar.gz) = 12966789
diff --git a/math/freefem++/files/patch-plugin_seq_metis.cpp b/math/freefem++/files/patch-plugin_seq_metis.cpp
new file mode 100644
index 000000000000..c9c1bc9f8915
--- /dev/null
+++ b/math/freefem++/files/patch-plugin_seq_metis.cpp
@@ -0,0 +1,31 @@
+- from https://github.com/FreeFem/FreeFem-sources/issues/280#issuecomment-1596025016
+
+--- plugin/seq/metis.cpp.orig	2023-06-18 09:28:12 UTC
++++ plugin/seq/metis.cpp
+@@ -97,7 +97,7 @@ KN< R > *partmetis( KN< R > *const &part, FESPACE *con
+       }
+ 
+ #endif
+-  } else epart = 0;
++  } else epart = static_cast<idx_t>(0);
+   part->resize(nv);
+   *part = npart;
+   return part;
+@@ -154,7 +154,7 @@ KN< R > *partmetis(Stack s, KN< R > *const &part, Mesh
+       }
+ 
+ #endif
+-  } else epart = 0;
++  } else epart = static_cast<idx_t>(0);
+   part->resize(nt);
+   *part = epart;
+   return part;
+@@ -184,7 +184,7 @@ KN< long > *partmetisd(Stack s, KN< long > *const &par
+       printf("  %d-way Edge-Cut: %7d, Balance: %5.2f\n", nparts, nve,
+               ComputeElementBalance(nt, nparts, epart));
+ #endif
+-  } else epart = 0;
++  } else epart = static_cast<idx_t>(0);
+   part->resize(nt);
+   *part = epart;
+   return part;
diff --git a/math/freefem++/pkg-plist b/math/freefem++/pkg-plist
index fe0640e43e90..f78e5d12e8ef 100644
--- a/math/freefem++/pkg-plist
+++ b/math/freefem++/pkg-plist
@@ -1,244 +1,247 @@
 bin/FreeFem++
 bin/FreeFem++-nw
 bin/bamg
 bin/cvmsh2
 bin/ff-c++
 bin/ff-get-dep
 bin/ff-pkg-download
 bin/ffglut
 bin/ffmaster
 bin/ffmedit
 lib/ff++/%%VER%%/bin/ff-get-dep
 lib/ff++/%%VER%%/bin/ff-pkg-download
 lib/ff++/%%VER%%/%%ETCDIR%%.pref
 lib/ff++/%%VER%%/idp/CC.idp
 lib/ff++/%%VER%%/idp/DDM-Schwarz-macro.idp
 lib/ff++/%%VER%%/idp/DDM-funcs-v2.idp
 lib/ff++/%%VER%%/idp/ElasticLaw2d.idp
 lib/ff++/%%VER%%/idp/ExtractDofsonBorder.idp
 lib/ff++/%%VER%%/idp/Heat3d.idp
 lib/ff++/%%VER%%/idp/MPIGMRESmacro.idp
 lib/ff++/%%VER%%/idp/MPIplot.idp
 lib/ff++/%%VER%%/idp/MeshSurface.idp
 lib/ff++/%%VER%%/idp/ball-buildlayer.idp
+lib/ff++/%%VER%%/idp/buildmeshS.idp
 lib/ff++/%%VER%%/idp/cobrameshcavity.idp
 lib/ff++/%%VER%%/idp/cube.idp
 lib/ff++/%%VER%%/idp/ffddm.idp
 lib/ff++/%%VER%%/idp/ffddm_coarsemeshCS.idp
 lib/ff++/%%VER%%/idp/ffddm_functions.idp
 lib/ff++/%%VER%%/idp/ffddm_geneoCS.idp
 lib/ff++/%%VER%%/idp/ffddm_geneoCS_3rdlvl.idp
 lib/ff++/%%VER%%/idp/ffddm_geneoCS_saddlepoint.idp
 lib/ff++/%%VER%%/idp/ffddm_parameters.idp
 lib/ff++/%%VER%%/idp/ffddm_partitioning.idp
 lib/ff++/%%VER%%/idp/func-max.idp
 lib/ff++/%%VER%%/idp/getARGV.idp
 lib/ff++/%%VER%%/idp/gsl.idp
 lib/ff++/%%VER%%/idp/macro_ddm.idp
 lib/ff++/%%VER%%/idp/macro_ddm_substructuring.idp
 lib/ff++/%%VER%%/idp/mortar-msh.idp
 lib/ff++/%%VER%%/idp/movemeshsmooth.idp
 lib/ff++/%%VER%%/include/AFunction.hpp
 lib/ff++/%%VER%%/include/AFunction_ext.hpp
 lib/ff++/%%VER%%/include/AddNewFE.h
 lib/ff++/%%VER%%/include/AnyType.hpp
 lib/ff++/%%VER%%/include/BFGS.hpp
 lib/ff++/%%VER%%/include/BamgFreeFem.hpp
 lib/ff++/%%VER%%/include/BrentLS.hpp
 lib/ff++/%%VER%%/include/CG.hpp
 lib/ff++/%%VER%%/include/CGNL.hpp
 lib/ff++/%%VER%%/include/CodeAlloc.hpp
 lib/ff++/%%VER%%/include/CubicLS.hpp
 lib/ff++/%%VER%%/include/DOperator.hpp
 lib/ff++/%%VER%%/include/DataFindBoundary.hpp
 lib/ff++/%%VER%%/include/FESpace.hpp
 lib/ff++/%%VER%%/include/FESpacen.hpp
 lib/ff++/%%VER%%/include/FQuadTree.hpp
 lib/ff++/%%VER%%/include/GQuadTree.hpp
 lib/ff++/%%VER%%/include/GenericMesh.hpp
 lib/ff++/%%VER%%/include/HashMatrix.hpp
 lib/ff++/%%VER%%/include/HashTable.hpp
 lib/ff++/%%VER%%/include/HeapSort.hpp
 lib/ff++/%%VER%%/include/InitFunct.hpp
 lib/ff++/%%VER%%/include/Label.hpp
 lib/ff++/%%VER%%/include/LineSearch.hpp
 lib/ff++/%%VER%%/include/MatriceCreuse.hpp
 lib/ff++/%%VER%%/include/MatriceCreuse_tpl.hpp
 lib/ff++/%%VER%%/include/MatriceElementaire.hpp
 lib/ff++/%%VER%%/include/Mesh1dn.hpp
 lib/ff++/%%VER%%/include/Mesh2.h
 lib/ff++/%%VER%%/include/Mesh2dn.hpp
 lib/ff++/%%VER%%/include/Mesh3dn.hpp
 lib/ff++/%%VER%%/include/MeshLn.hpp
 lib/ff++/%%VER%%/include/MeshPoint.hpp
 lib/ff++/%%VER%%/include/MeshSn.hpp
 lib/ff++/%%VER%%/include/Meshio.h
 lib/ff++/%%VER%%/include/Metric.h
 lib/ff++/%%VER%%/include/NRJ.hpp
 lib/ff++/%%VER%%/include/NewtonRaphson.hpp
 lib/ff++/%%VER%%/include/Operator.hpp
 lib/ff++/%%VER%%/include/Optima.hpp
 lib/ff++/%%VER%%/include/P1IsoValue.hpp
 lib/ff++/%%VER%%/include/Param.hpp
 lib/ff++/%%VER%%/include/PkLagrange.hpp
 lib/ff++/%%VER%%/include/PlotStream.hpp
 lib/ff++/%%VER%%/include/QuadTree.h
 lib/ff++/%%VER%%/include/QuadratureFormular.hpp
 lib/ff++/%%VER%%/include/R1.hpp
 lib/ff++/%%VER%%/include/R2.h
 lib/ff++/%%VER%%/include/R2.hpp
 lib/ff++/%%VER%%/include/R3.hpp
 lib/ff++/%%VER%%/include/RNM.hpp
 lib/ff++/%%VER%%/include/RNM_op.hpp
 lib/ff++/%%VER%%/include/RNM_opc.hpp
 lib/ff++/%%VER%%/include/RNM_tpl.hpp
 lib/ff++/%%VER%%/include/RefCounter.hpp
 lib/ff++/%%VER%%/include/RosenBrock.hpp
 lib/ff++/%%VER%%/include/Serialize.hpp
 lib/ff++/%%VER%%/include/SetOfE4.h
 lib/ff++/%%VER%%/include/SkyLineSolver.hpp
 lib/ff++/%%VER%%/include/SolverSkyLine.hpp
 lib/ff++/%%VER%%/include/SparseLinearSolver.hpp
 lib/ff++/%%VER%%/include/String.hpp
 lib/ff++/%%VER%%/include/VirtualMatrix.hpp
 lib/ff++/%%VER%%/include/VirtualSolver.hpp
 lib/ff++/%%VER%%/include/VirtualSolverCG.hpp
 lib/ff++/%%VER%%/include/VirtualSolverSkyLine.hpp
 lib/ff++/%%VER%%/include/VirtualSolverSparseSuite.hpp
 lib/ff++/%%VER%%/include/array_init.hpp
 lib/ff++/%%VER%%/include/array_resize.hpp
 lib/ff++/%%VER%%/include/array_tlp.hpp
 lib/ff++/%%VER%%/include/assertion.hpp
 lib/ff++/%%VER%%/include/bmo.hpp
 lib/ff++/%%VER%%/include/clapack.h
+lib/ff++/%%VER%%/include/compositeFESpace.hpp
 lib/ff++/%%VER%%/include/config.h
 lib/ff++/%%VER%%/include/defs.hpp
 lib/ff++/%%VER%%/include/eigenv.h
 lib/ff++/%%VER%%/include/endian.hpp
 lib/ff++/%%VER%%/include/environment.hpp
 lib/ff++/%%VER%%/include/error.hpp
 lib/ff++/%%VER%%/include/fem.hpp
 lib/ff++/%%VER%%/include/fem3.hpp
 lib/ff++/%%VER%%/include/ff++.hpp
 lib/ff++/%%VER%%/include/ffapi.hpp
 lib/ff++/%%VER%%/include/ffstack.hpp
 lib/ff++/%%VER%%/include/getprog-unix.hpp
 lib/ff++/%%VER%%/include/glrgraph.hpp
 lib/ff++/%%VER%%/include/gmres.hpp
 lib/ff++/%%VER%%/include/lex.hpp
 lib/ff++/%%VER%%/include/lg.tab.hpp
 lib/ff++/%%VER%%/include/lgfem.hpp
 lib/ff++/%%VER%%/include/lgmesh3.hpp
 lib/ff++/%%VER%%/include/lgsolver.hpp
 lib/ff++/%%VER%%/include/libMesh/chrono.h
 lib/ff++/%%VER%%/include/libMesh/eigenv.h
 lib/ff++/%%VER%%/include/libMesh/libmeshb7.h
 lib/ff++/%%VER%%/include/libMesh/memory.h
 lib/ff++/%%VER%%/include/libmeshb7.h
 lib/ff++/%%VER%%/include/meshtype.h
 lib/ff++/%%VER%%/include/mode_open.hpp
 lib/ff++/%%VER%%/include/msh3.hpp
 lib/ff++/%%VER%%/include/pcm.hpp
 lib/ff++/%%VER%%/include/ppmimg.h
 lib/ff++/%%VER%%/include/problem.hpp
 lib/ff++/%%VER%%/include/renumb.hpp
 lib/ff++/%%VER%%/include/rgraph.hpp
 lib/ff++/%%VER%%/include/showverb.hpp
 lib/ff++/%%VER%%/include/splitsimplex.hpp
 lib/ff++/%%VER%%/include/strversionnumber.hpp
 lib/ff++/%%VER%%/include/throwassert.hpp
 lib/ff++/%%VER%%/include/ufunction.hpp
 lib/ff++/%%VER%%/include/versionnumber.hpp
 lib/ff++/%%VER%%/include/write_hdf5.hpp
 lib/ff++/%%VER%%/include/write_xdmf.hpp
 lib/ff++/%%VER%%/lib/BEC.so
 lib/ff++/%%VER%%/lib/BernardiRaugel.so
 lib/ff++/%%VER%%/lib/BinaryIO.so
 lib/ff++/%%VER%%/lib/CircumCenter.so
 lib/ff++/%%VER%%/lib/ClosePoints.so
 lib/ff++/%%VER%%/lib/Curvature.so
 lib/ff++/%%VER%%/lib/DxWriter.so
 lib/ff++/%%VER%%/lib/Element_HCT.so
 lib/ff++/%%VER%%/lib/Element_Mixte.so
 lib/ff++/%%VER%%/lib/Element_Mixte3d.so
 lib/ff++/%%VER%%/lib/Element_P1bl.so
 lib/ff++/%%VER%%/lib/Element_P1dc1.so
 lib/ff++/%%VER%%/lib/Element_P1ncdc.so
 lib/ff++/%%VER%%/lib/Element_P2bulle3.so
 lib/ff++/%%VER%%/lib/Element_P2pnc.so
 lib/ff++/%%VER%%/lib/Element_P2pnc_3d.so
 lib/ff++/%%VER%%/lib/Element_P3.so
 lib/ff++/%%VER%%/lib/Element_P3dc.so
 lib/ff++/%%VER%%/lib/Element_P3nc.so
 lib/ff++/%%VER%%/lib/Element_P3pnc.so
+lib/ff++/%%VER%%/lib/Element_P3pnc_3d.so
 lib/ff++/%%VER%%/lib/Element_P4.so
 lib/ff++/%%VER%%/lib/Element_P4dc.so
 lib/ff++/%%VER%%/lib/Element_PkEdge.so
 lib/ff++/%%VER%%/lib/Element_QF.so
 lib/ff++/%%VER%%/lib/FreeFemQA.so
 lib/ff++/%%VER%%/lib/Helmholtz_FD.so
 lib/ff++/%%VER%%/lib/IncompleteCholesky.so
 lib/ff++/%%VER%%/lib/MatD-VFP0.so
 lib/ff++/%%VER%%/lib/MatrixMarket.so
 lib/ff++/%%VER%%/lib/MetricKuate.so
 lib/ff++/%%VER%%/lib/MetricPk.so
 lib/ff++/%%VER%%/lib/Morley.so
 lib/ff++/%%VER%%/lib/NewSolver.so
 lib/ff++/%%VER%%/lib/SaveHB.so
 lib/ff++/%%VER%%/lib/Schur-Complement.so
 lib/ff++/%%VER%%/lib/SuperLu.so
 lib/ff++/%%VER%%/lib/UMFPACK64.so
 lib/ff++/%%VER%%/lib/VTK_writer.so
 lib/ff++/%%VER%%/lib/VTK_writer_3d.so
 lib/ff++/%%VER%%/lib/WHERE.libMesh
 lib/ff++/%%VER%%/lib/WHERE_LIBRARY
 lib/ff++/%%VER%%/lib/WHERE_LIBRARY-config
 lib/ff++/%%VER%%/lib/WHERE_LIBRARY-download
 lib/ff++/%%VER%%/lib/addNewType.so
 lib/ff++/%%VER%%/lib/bfstream.so
 lib/ff++/%%VER%%/lib/biofunc.so
 lib/ff++/%%VER%%/lib/dfft.so
 lib/ff++/%%VER%%/lib/distance.so
 lib/ff++/%%VER%%/lib/exactpartition.so
 lib/ff++/%%VER%%/lib/ff-AiryBiry.so
 lib/ff++/%%VER%%/lib/ff-NLopt.so
 lib/ff++/%%VER%%/lib/ff-cmaes.so
 lib/ff++/%%VER%%/lib/ff-get-dep.awk
 lib/ff++/%%VER%%/lib/ffnewuoa.so
 lib/ff++/%%VER%%/lib/ffrandom.so
 lib/ff++/%%VER%%/lib/funcTemplate.so
 lib/ff++/%%VER%%/lib/geophysics.so
 lib/ff++/%%VER%%/lib/gmsh.so
 lib/ff++/%%VER%%/lib/gsl.so
 lib/ff++/%%VER%%/lib/iohdf5.so
 lib/ff++/%%VER%%/lib/ioply.so
 lib/ff++/%%VER%%/lib/iovtk.so
 lib/ff++/%%VER%%/lib/isoline.so
 lib/ff++/%%VER%%/lib/lapack.so
 lib/ff++/%%VER%%/lib/lgbmo.so
 lib/ff++/%%VER%%/lib/libMesh.a
 lib/ff++/%%VER%%/lib/mat_dervieux.so
 lib/ff++/%%VER%%/lib/mat_edgeP1.so
 lib/ff++/%%VER%%/lib/mat_psi.so
 lib/ff++/%%VER%%/lib/medit.so
 lib/ff++/%%VER%%/lib/meshtools.so
 lib/ff++/%%VER%%/lib/metis.so
 lib/ff++/%%VER%%/lib/msh3.so
 lib/ff++/%%VER%%/lib/myfunction.so
 lib/ff++/%%VER%%/lib/myfunction2.so
 lib/ff++/%%VER%%/lib/pcm2rnm.so
 lib/ff++/%%VER%%/lib/plotPDF.so
 lib/ff++/%%VER%%/lib/ppm2rnm.so
 lib/ff++/%%VER%%/lib/qf11to25.so
 lib/ff++/%%VER%%/lib/shell.so
 lib/ff++/%%VER%%/lib/splitedges.so
 lib/ff++/%%VER%%/lib/splitmesh12.so
 lib/ff++/%%VER%%/lib/splitmesh3.so
 lib/ff++/%%VER%%/lib/splitmesh4.so
 lib/ff++/%%VER%%/lib/splitmesh6.so
 lib/ff++/%%VER%%/lib/tetgen.so
 lib/ff++/%%VER%%/lib/vortextools.so
 %%DATADIR%%/CheckAll
 %%DATADIR%%/CheckAllEdp
 %%DATADIR%%/plugin/seq/load.link
 @dir lib/ff++/%%VER%%/lib/mpi