diff --git a/science/libint2-psi4/Makefile b/science/libint2-psi4/Makefile
index dce366b9440e..e4c9ff1e4a42 100644
--- a/science/libint2-psi4/Makefile
+++ b/science/libint2-psi4/Makefile
@@ -1,49 +1,39 @@
 PORTNAME=	libint2-psi4
 DISTVERSION=	0.1-${VERSION}
-PORTREVISION=	6
 CATEGORIES=	science
 MASTER_SITES=	https://github.com/loriab/libint/releases/download/v${DISTVERSION:C/-.*//}/
-DISTFILES=	libint-${VERSION}-post1-5-4-3-6-5-4_mm4f12ob2_1.tgz
+DISTFILES=	libint-${VERSION}-5-4-3-6-5-4_mm10f12ob2_0.tgz
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Evaluate the integrals in modern atomic and molecular theory (psi4)
 WWW=		https://github.com/evaleev/libint
 
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 BROKEN_aarch64=	compilation fails: runaway processes and out-of-memory conditions
 BROKEN_i386=	compilation fails: clang runs out of memory
 BROKEN_armv7=	compilation fails: clang runs out of memory
 
 LIB_DEPENDS=	libboost_thread.so:devel/boost-libs \
 		libgmpxx.so:math/gmp
 
 USES=		cmake:testing eigen:3 python:build
 USE_LDCONFIG=	yes
 
-WRKSRC=		${WRKDIR}/libint-${VERSION}-post1
+WRKSRC=		${WRKDIR}/libint-${VERSION}
 
 CMAKE_ARGS=	-DLIBINT2_SHGAUSS_ORDERING=gaussian \
 		-DPython_EXECUTABLE=${PYTHON_CMD}
 CMAKE_ON=	BUILD_SHARED_LIBS \
 		REQUIRE_CXX_API
 CMAKE_OFF=	ENABLE_FORTRAN \
 		REQUIRE_CXX_API_COMPILED
 
-VERSION=	2.7.2
+VERSION=	2.8.1
 
 PLIST_SUB+=	VER=${VERSION}
 
 CONFLICTS=	libint2
 
-OPTIONS_DEFINE=		NATIVE
-
-NATIVE_CMAKE_BOOL=	ENABLE_XHOST
-
-post-configure: # workaround for clang hanging on unity_1935_cxx.cxx, see https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=265809
-	#@cd ${BUILD_WRKSRC} && \
-	#	${SED} -e 's|%%BUILD_WRKSRC%%|${BUILD_WRKSRC}|g ; s|%%WRKDIR%%|${WRKDIR}|g' < ${FILESDIR}/build.patch | ${PATCH}
-	${REINPLACE_CMD} -e 's| -O2 | |g' ${BUILD_WRKSRC}/build.ninja
-
 .include <bsd.port.mk>
diff --git a/science/libint2-psi4/distinfo b/science/libint2-psi4/distinfo
index e4fb75646568..34a6eb6733b0 100644
--- a/science/libint2-psi4/distinfo
+++ b/science/libint2-psi4/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1684466086
-SHA256 (libint-2.7.2-post1-5-4-3-6-5-4_mm4f12ob2_1.tgz) = 2d3a27510578f409fb080574721923c6d5bd06b13583a12d6823326be88236df
-SIZE (libint-2.7.2-post1-5-4-3-6-5-4_mm4f12ob2_1.tgz) = 313189548
+TIMESTAMP = 1780341212
+SHA256 (libint-2.8.1-5-4-3-6-5-4_mm10f12ob2_0.tgz) = 9c07b8202efd66a5db6be7dc8b5ecf41a39eb73a751748f0a1f2d1eb5f883eb2
+SIZE (libint-2.8.1-5-4-3-6-5-4_mm10f12ob2_0.tgz) = 322218029
diff --git a/science/libint2-psi4/pkg-plist b/science/libint2-psi4/pkg-plist
index 41113b41d5de..cbb68f593ec9 100644
--- a/science/libint2-psi4/pkg-plist
+++ b/science/libint2-psi4/pkg-plist
@@ -1,167 +1,146 @@
 include/libint2.h
 include/libint2.hpp
-include/libint2/GenericContract.h
-include/libint2/GenericGaussDeriv.h
-include/libint2/GenericGaussDeriv.impl.h
-include/libint2/GenericScale.h
-include/libint2/ITR_xs_xs.h
-include/libint2/OSVRR_sx_sx.h
-include/libint2/OSVRR_sx_sx_deriv.h
-include/libint2/OSVRR_xs_xs.h
-include/libint2/OSVRR_xs_xs_deriv.h
-include/libint2/VRR_GTG_1d_xx_xx.h
-include/libint2/VRR_GTG_1d_xx_xx_vec.h
-include/libint2/VRR_r12kg12_xs_xs.h
 include/libint2/atom.h
 include/libint2/basis.h
 include/libint2/boys.h
 include/libint2/boys_cheb7.h
 include/libint2/boys_cheb7_v2.h
 include/libint2/boys_fwd.h
 include/libint2/braket.h
 include/libint2/cartesian.h
 include/libint2/cgshell_ordering.h
 include/libint2/cgshellinfo.h
 include/libint2/chemistry/elements.h
 include/libint2/chemistry/sto3g_atomic_density.h
 include/libint2/config.h
-include/libint2/config2.h
 include/libint2/cxxapi.h
 include/libint2/deriv_iter.h
 include/libint2/deriv_map.h
 include/libint2/diis.h
 include/libint2/engine.h
 include/libint2/engine.impl.h
 include/libint2/initialize.h
 include/libint2/lcao/1body.h
 include/libint2/lcao/molden.h
 include/libint2/libint2_iface.h
-include/libint2/libint2_iface_internal.h
 include/libint2/libint2_params.h
 include/libint2/libint2_types.h
 include/libint2/numeric.h
 include/libint2/shell.h
 include/libint2/shgshell_ordering.h
 include/libint2/solidharmonics.h
 include/libint2/statics_definition.h
 include/libint2/tenno_cheb.h
 include/libint2/tenno_cheb15.h
 include/libint2/tensor.h
-include/libint2/tests/unit/fixture.h
 include/libint2/util/any.h
 include/libint2/util/array_adaptor.h
 include/libint2/util/compressed_pair.h
 include/libint2/util/configuration.h
 include/libint2/util/cxxstd.h
 include/libint2/util/deprecated.h
 include/libint2/util/generated/libint2_iface.h
 include/libint2/util/generated/libint2_params.h
 include/libint2/util/generated/libint2_types.h
 include/libint2/util/intpart_iter.h
 include/libint2/util/intrinsic_operations.h
 include/libint2/util/intrinsic_types.h
 include/libint2/util/memory.h
 include/libint2/util/singleton.h
 include/libint2/util/small_vector.h
 include/libint2/util/timer.h
 include/libint2/util/type_traits.h
 include/libint2/util/vector.h
 include/libint2/util/vector_ppc.h
 include/libint2/util/vector_x86.h
-include/libint2/util_types.h
-lib/cmake/libint2/FindEigen3.cmake
 lib/cmake/libint2/libint2-config-version.cmake
 lib/cmake/libint2/libint2-config.cmake
-lib/cmake/libint2/libint2-targets-shared-%%CMAKE_BUILD_TYPE%%.cmake
-lib/cmake/libint2/libint2-targets-shared.cmake
-lib/libint2-cxx.so
-lib/libint2-cxx.so.2
+lib/cmake/libint2/libint2-targets-%%CMAKE_BUILD_TYPE%%.cmake
+lib/cmake/libint2/libint2-targets.cmake
 lib/libint2.so
-lib/libint2.so.2
 libdata/pkgconfig/libint2.pc
 share/libint/%%VER%%/basis/3-21g.g94
-share/libint/%%VER%%/basis/6-311g_d_p_.g94
+share/libint/%%VER%%/basis/6-311g**.g94
+share/libint/%%VER%%/basis/6-311gss.g94
+share/libint/%%VER%%/basis/6-31g**.g94
+share/libint/%%VER%%/basis/6-31g*.g94
 share/libint/%%VER%%/basis/6-31g.g94
-share/libint/%%VER%%/basis/6-31g_d_.g94
-share/libint/%%VER%%/basis/6-31g_d_p_.g94
+share/libint/%%VER%%/basis/6-31gs.g94
+share/libint/%%VER%%/basis/6-31gss.g94
 share/libint/%%VER%%/basis/ano-rcc.g94
 share/libint/%%VER%%/basis/aug-cc-pv5z-cabs.g94
 share/libint/%%VER%%/basis/aug-cc-pvdz-cabs.g94
 share/libint/%%VER%%/basis/aug-cc-pvqz-cabs.g94
 share/libint/%%VER%%/basis/aug-cc-pvtz-cabs.g94
 share/libint/%%VER%%/basis/augmentation-cc-pv5z-jkfit.g94
 share/libint/%%VER%%/basis/augmentation-cc-pv5z-ri.g94
 share/libint/%%VER%%/basis/augmentation-cc-pv5z.g94
 share/libint/%%VER%%/basis/augmentation-cc-pv6z-ri.g94
 share/libint/%%VER%%/basis/augmentation-cc-pv6z.g94
 share/libint/%%VER%%/basis/augmentation-cc-pvdz-jkfit.g94
 share/libint/%%VER%%/basis/augmentation-cc-pvdz-ri.g94
 share/libint/%%VER%%/basis/augmentation-cc-pvdz.g94
 share/libint/%%VER%%/basis/augmentation-cc-pvqz-jkfit.g94
 share/libint/%%VER%%/basis/augmentation-cc-pvqz-ri.g94
 share/libint/%%VER%%/basis/augmentation-cc-pvqz.g94
 share/libint/%%VER%%/basis/augmentation-cc-pvtz-jkfit.g94
 share/libint/%%VER%%/basis/augmentation-cc-pvtz-ri.g94
 share/libint/%%VER%%/basis/augmentation-cc-pvtz.g94
 share/libint/%%VER%%/basis/cc-pv5z-jkfit.g94
 share/libint/%%VER%%/basis/cc-pv5z-ri.g94
 share/libint/%%VER%%/basis/cc-pv5z.g94
 share/libint/%%VER%%/basis/cc-pv6z-ri.g94
 share/libint/%%VER%%/basis/cc-pv6z.g94
 share/libint/%%VER%%/basis/cc-pvdz-f12-cabs.g94
 share/libint/%%VER%%/basis/cc-pvdz-f12.g94
 share/libint/%%VER%%/basis/cc-pvdz-jkfit.g94
 share/libint/%%VER%%/basis/cc-pvdz-ri.g94
 share/libint/%%VER%%/basis/cc-pvdz.g94
 share/libint/%%VER%%/basis/cc-pvqz-f12-cabs.g94
 share/libint/%%VER%%/basis/cc-pvqz-f12.g94
 share/libint/%%VER%%/basis/cc-pvqz-jkfit.g94
 share/libint/%%VER%%/basis/cc-pvqz-ri.g94
 share/libint/%%VER%%/basis/cc-pvqz.g94
 share/libint/%%VER%%/basis/cc-pvtz-f12-cabs.g94
 share/libint/%%VER%%/basis/cc-pvtz-f12.g94
 share/libint/%%VER%%/basis/cc-pvtz-jkfit.g94
 share/libint/%%VER%%/basis/cc-pvtz-mini.g94
 share/libint/%%VER%%/basis/cc-pvtz-ri.g94
 share/libint/%%VER%%/basis/cc-pvtz.g94
 share/libint/%%VER%%/basis/def2-qzvp-c.g94
 share/libint/%%VER%%/basis/def2-qzvp-j.g94
 share/libint/%%VER%%/basis/def2-qzvp-jk.g94
 share/libint/%%VER%%/basis/def2-qzvp.g94
 share/libint/%%VER%%/basis/def2-qzvpd.g94
 share/libint/%%VER%%/basis/def2-qzvpp-c.g94
 share/libint/%%VER%%/basis/def2-qzvpp-j.g94
 share/libint/%%VER%%/basis/def2-qzvpp-jk.g94
 share/libint/%%VER%%/basis/def2-qzvpp.g94
 share/libint/%%VER%%/basis/def2-qzvppd-c.g94
 share/libint/%%VER%%/basis/def2-qzvppd.g94
 share/libint/%%VER%%/basis/def2-sv(p)-c.g94
 share/libint/%%VER%%/basis/def2-sv(p)-j.g94
 share/libint/%%VER%%/basis/def2-sv(p)-jk.g94
 share/libint/%%VER%%/basis/def2-sv(p).g94
 share/libint/%%VER%%/basis/def2-sv.g94
 share/libint/%%VER%%/basis/def2-svp-c.g94
 share/libint/%%VER%%/basis/def2-svp-j.g94
 share/libint/%%VER%%/basis/def2-svp-jk.g94
 share/libint/%%VER%%/basis/def2-svp.g94
 share/libint/%%VER%%/basis/def2-svpd-c.g94
 share/libint/%%VER%%/basis/def2-svpd.g94
 share/libint/%%VER%%/basis/def2-tzvp-c.g94
 share/libint/%%VER%%/basis/def2-tzvp-j.g94
 share/libint/%%VER%%/basis/def2-tzvp-jk.g94
 share/libint/%%VER%%/basis/def2-tzvp.g94
 share/libint/%%VER%%/basis/def2-tzvpd-c.g94
 share/libint/%%VER%%/basis/def2-tzvpd.g94
 share/libint/%%VER%%/basis/def2-tzvpp-c.g94
 share/libint/%%VER%%/basis/def2-tzvpp-j.g94
 share/libint/%%VER%%/basis/def2-tzvpp-jk.g94
 share/libint/%%VER%%/basis/def2-tzvpp.g94
 share/libint/%%VER%%/basis/def2-tzvppd-c.g94
 share/libint/%%VER%%/basis/def2-tzvppd.g94
 share/libint/%%VER%%/basis/mini.g94
 share/libint/%%VER%%/basis/sto-3g.g94
 share/libint/%%VER%%/basis/sto-6g.g94
-@dir include/libint2/fortran
-@dir include/libint2/tests/eri
-@dir include/libint2/tests/fortran
-@dir include/libint2/tests/hartree-fock