diff --git a/science/gromacs/Makefile b/science/gromacs/Makefile
index cf150eb41fad..ce462cf73082 100644
--- a/science/gromacs/Makefile
+++ b/science/gromacs/Makefile
@@ -1,100 +1,107 @@
 PORTNAME=	gromacs
 DISTVERSION=	2023.2
 CATEGORIES=	science
 MASTER_SITES=	ftp://ftp.gromacs.org/pub/gromacs/
+DISTFILES=	${DISTNAME}${EXTRACT_SUFX} # only for googletest
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Compute molecular dynamics
 WWW=		https://www.gromacs.org/
 
 LICENSE=	LGPL21
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 BROKEN_i386=	undefined reference to `__atomic_load' and `__atomic_compare_exchange' #`
 
 BUILD_DEPENDS=	boost-libs>=1.44:devel/boost-libs
 LIB_DEPENDS=	libhwloc.so:devel/hwloc2
-TEST_DEPENDS=	googletest>0:devel/googletest
 
-USES=		cmake compiler:c++17-lang fortran gnome perl5 pkgconfig python:build shebangfix xorg
+USES=		cmake compiler:c++17-lang gnome perl5 pkgconfig python:build shebangfix xorg
 USE_GNOME=	libxml2
 USE_LDCONFIG=	yes
 
+USE_GITHUB=	nodefault
+GH_TUPLE=	google:googletest:v1.13.0:googletest
+
 SHEBANG_FILES=	admin/*.sh scripts/*.pl scripts/*.sh src/gromacs/selection/*.sh
 bash_CMD=	${SH}
 
 CMAKE_OFF=	GMX_USE_RDTSCP \
 		USE_PYTHON_SCRIPTS
 CMAKE_ARGS=	-DPython3_EXECUTABLE=${PYTHON_CMD}
 
 TEST_TARGET=	check
 
 OPTIONS_DEFINE=		ATLAS FLOAT LEGACY OPENCL OPENMP SIMD X11
 OPTIONS_SINGLE=		MP
 OPTIONS_SINGLE_MP=	NOMP MPICH OPENMPI THREAD_MPI
-OPTIONS_DEFAULT=	LEGACY OPENMP THREAD_MPI X11 # FLOAT should not a default because science/votca needs double precision. This is likely the same for many other uses.
+OPTIONS_DEFAULT=	LEGACY OPENMP THREAD_MPI X11 # FLOAT should not be a default because science/votca needs double precision. This is likely the same for many other uses.
 OPTIONS_SUB=		yes
 
 ATLAS_DESC=		Use ATLAS for BLAS and LAPACK
 ATLAS_USES=		blaslapack:atlas
 ATLAS_USES_OFF=		blaslapack
 ATLAS_CMAKE_ON=		-DBLAS_LIBRARIES:FILEPATH="${LOCALBASE}/lib/libcblas.so;${LOCALBASE}/lib/libf77blas.so" \
 			-DLAPACK_LIBRARIES:FILEPATH="${LOCALBASE}/lib/libalapack.so"
 ATLAS_CMAKE_OFF=	-DBLAS_LIBRARIES:FILEPATH="${LOCALBASE}/lib/libblas.so" \
 			-DLAPACK_LIBRARIES:FILEPATH="${LOCALBASE}/lib/liblapack.so"
 
 FLOAT_DESC=		Use single instead of double precision
 FLOAT_BUILD_DEPENDS=	fftw3>0:math/fftw3
 FLOAT_LIB_DEPENDS=	libfftw3f.so:math/fftw3-float
 FLOAT_LIB_DEPENDS_OFF=	libfftw3.so:math/fftw3
 FLOAT_CMAKE_ON=		-DGMX_DOUBLE:BOOL=OFF
 FLOAT_CMAKE_OFF=	-DGMX_DOUBLE:BOOL=ON
 FLOAT_PLIST_SUB=	SUFFIX_D=""
 FLOAT_PLIST_SUB_OFF=	SUFFIX_D="_d"
 
 LEGACY_DESC=		Install legacy API # expected by science/votca
 LEGACY_CMAKE_BOOL=	GMX_INSTALL_LEGACY_API
 
 OPENCL_CMAKE_BOOL=	GMX_USE_OPENCL
 OPENCL_CMAKE_ON=	-DGMX_GPU:STRING=OpenCL # one of: OFF, CUDA, OpenCL, SYCL
 OPENCL_CMAKE_OFF=	-DGMX_GPU:STRING=OFF
 OPENCL_LIB_DEPENDS=	libOpenCL.so:devel/ocl-icd
 
 OPENMP_CMAKE_ON=	-DGMX_CXX11:BOOL=OFF
 OPENMP_CMAKE_OFF=	-DGMX_OPENMP:BOOL=OFF
 
 SIMD_CMAKE_OFF=		-DGMX_SIMD:STRING="None"
 
 X11_USE=		XORG=ice,sm,xext,x11
 X11_CMAKE_BOOL=		GMX_X11
 
 MP_DESC=		Multiprocessing
 
 NOMP_DESC=		No multiprocessing support
 NOMP_PLIST_SUB=		SUFFIX_MPI=""
 
 MPICH_LIB_DEPENDS=	libmpich.so:net/mpich
 MPICH_CMAKE_ON=		-DGMX_MPI:BOOL=ON \
 			-DMPI_C_COMPILER:FILEPATH="${LOCALBASE}/bin/mpicc"
 MPICH_PLIST_SUB=	SUFFIX_MPI="_mpi"
 
 OPENMPI_BUILD_DEPENDS=	openmpi>0:net/openmpi
 OPENMPI_RUN_DEPENDS=	openmpi>0:net/openmpi
 OPENMPI_CMAKE_ON=	-DGMX_MPI:BOOL=ON \
 			-DMPI_C_COMPILER:FILEPATH="${LOCALBASE}/mpi/openmpi/bin/mpicc"
 OPENMPI_PLIST_SUB=	SUFFIX_MPI="_mpi"
 
 THREAD_MPI_DESC=	Build a thread-MPI-based multithreaded version of GROMACS
 THREAD_MPI_CMAKE_BOOL=	GMX_THREAD_MPI
 THREAD_MPI_PLIST_SUB=	SUFFIX_MPI=""
 
+post-extract: # replace outdated bundled googletest with a newer version to fix tests build, see https://gitlab.com/gromacs/gromacs/-/issues/4825
+	@${RM} -r ${WRKSRC}/src/external/googletest
+	@${RLN} ${WRKSRC_googletest} ${WRKSRC}/src/external/googletest
+
 post-patch:
 	@${FIND} ${WRKSRC} -name "GMXRC.*" | ${XARGS} ${REINPLACE_CMD} -e \
 		's|LDLIB/pkgconfig|LDLIB/../libdata/pkgconfig| ; \
 		 s|LDLIB}/pkgconfig|LDLIB}/../libdata/pkgconfig|'
 	@${REINPLACE_CMD} -e '/CMAKE_REQUIRED_LIBRARIES/d' \
 		${WRKSRC}/cmake/gmxTestdlopen.cmake
 
 # tests fail to compile, see https://gitlab.com/gromacs/gromacs/-/issues/4825
 
 .include <bsd.port.mk>
diff --git a/science/gromacs/distinfo b/science/gromacs/distinfo
index 0cec71219d3a..1b7c30fa9b05 100644
--- a/science/gromacs/distinfo
+++ b/science/gromacs/distinfo
@@ -1,3 +1,5 @@
-TIMESTAMP = 1689223634
+TIMESTAMP = 1689290012
 SHA256 (gromacs-2023.2.tar.gz) = bce1480727e4b2bb900413b75d99a3266f3507877da4f5b2d491df798f9fcdae
 SIZE (gromacs-2023.2.tar.gz) = 41930578
+SHA256 (google-googletest-v1.13.0_GH0.tar.gz) = ad7fdba11ea011c1d925b3289cf4af2c66a352e18d4c7264392fead75e919363
+SIZE (google-googletest-v1.13.0_GH0.tar.gz) = 862871