diff --git a/science/PETSc/Makefile b/science/PETSc/Makefile
index 5067cf1ff2a2..c1853b3c0079 100644
--- a/science/PETSc/Makefile
+++ b/science/PETSc/Makefile
@@ -1,61 +1,60 @@
 PORTNAME=	PETSc
-DISTVERSION=	3.18.4
-PORTREVISION=	1
+DISTVERSION=	3.18.5
 CATEGORIES=	science devel
 MASTER_SITES=	https://ftp.mcs.anl.gov/pub/petsc/release-snapshots/
 DISTNAME=	${PORTNAME:tl}-${DISTVERSION}
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Suite of data structures and routines from Argonne National Laboratory
 WWW=		https://www.mcs.anl.gov/petsc
 
 LICENSE=	BSD2CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BUILD_DEPENDS=	cmake:devel/cmake-core
 LIB_DEPENDS=	libmpich.so:net/mpich
 
 USES=		blaslapack fortran gmake python:3.7+ shebangfix xorg
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--with-shared-libraries=1 \
 		--with-mpi-dir=${LOCALBASE} \
 		--with-python=1 --with-python-pkg-config=${LOCALBASE}/libdata/pkgconfig \
 		FCFLAGS="${FCFLAGS}" FFLAGS="${FCFLAGS}"	\
 		${CONFIGURE_ARGS_${ARCH}} CPPFLAGS="${CPPFLAGS}" \
 		AR=${AR} RANLIB=${RANLIB} \
 		MAKEFLAGS="${MAKEFLAGS}" LDFLAGS="${LDFLAGS}" LIBS=""
 CONFIGURE_ARGS_amd64=	CFLAGS="${CFLAGS} -msse2" CXXFLAGS="${CXXFLAGS} -msse2"
 CONFIGURE_ARGS_i386=	CFLAGS="${CFLAGS} -msse2" CXXFLAGS="${CXXFLAGS} -msse2"
 CONFIGURE_ARGS=	--with-64-bit-indices # as opposed to 32-bit indices that are default
 CONFIGURE_LOG=	configure.log
 USE_XORG=	x11
 MAKEFILE=	makefile
 SHEBANG_FILES=	configure lib/petsc/bin/*.py lib/petsc/bin/saws/SAWs.py lib/petsc/bin/saws/*.bash config/*.py	\
 		lib/petsc/bin/petscnagfor share/petsc/chkerrconvert.py
 USE_LDCONFIG=	yes
 TEST_TARGET=	test
 BINARY_ALIAS=	python=${PYTHON_CMD}
 
 LDFLAGS+=	${LOCALBASE}/lib/libmpi.so
 
 DATADIR=	${PREFIX}/share/${PORTNAME:tl}
 PLIST_SUB=	SHLIB=${DISTVERSION} SHL=${DISTVERSION:C/\.[0-9]$//}
 
 OPTIONS_DEFINE=		METIS
 OPTIONS_DEFAULT=	METIS
 
 METIS_DESC=		Enable metis support for graph partitioning algorithms
 METIS_CONFIGURE_ON=	--with-metis=1 # --with-parmetis=1 to use include/parmetis.h
 METIS_LIB_DEPENDS=	libmetis.so:math/metis
 
 post-install:
 	@${STRIP_CMD} ${STAGEDIR}${PREFIX}/lib/libpetsc.so.${DISTVERSION}
 	@${FIND} ${STAGEDIR}${PREFIX} -name "*.html" -delete
 	@cd ${STAGEDIR}${PREFIX} && ${RM} -r bin/win32fe lib/petsc/conf/uninstall.py
 	@${REINPLACE_CMD} -i '' -e 's|^PYTHON = .*|PYTHON = ${PYTHON_CMD}|' ${STAGEDIR}${PREFIX}/lib/petsc/conf/petscvariables
 	@${REINPLACE_CMD} -i '' -e 's|#!/.*|#!${PYTHON_CMD}|' ${STAGEDIR}${PREFIX}/lib/petsc/conf/reconfigure-arch-*-c-debug.py
 	@${RMDIR} ${STAGEDIR}${PREFIX}/lib/petsc/bin/__pycache__ # stray directory
 
 # the file /usr/local/share/petsc/examples/config/gmakegen.py is expected by some dependencies, at least by math/slepc
 
 .include <bsd.port.mk>
diff --git a/science/PETSc/distinfo b/science/PETSc/distinfo
index 83a16e7b8aaa..3f5e0f616c83 100644
--- a/science/PETSc/distinfo
+++ b/science/PETSc/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1676021048
-SHA256 (petsc-3.18.4.tar.gz) = 6173d30637261c5b740c0bea14747759200ca2012c7343139f9216bc296a6394
-SIZE (petsc-3.18.4.tar.gz) = 16313900
+TIMESTAMP = 1677644259
+SHA256 (petsc-3.18.5.tar.gz) = df73ae13a4c5758325a9d69350cac423742657d8a8fc5782504b0e469ce46499
+SIZE (petsc-3.18.5.tar.gz) = 16322252