diff --git a/math/symengine/Makefile b/math/symengine/Makefile
index 02bee2583aab..1bcac467c742 100644
--- a/math/symengine/Makefile
+++ b/math/symengine/Makefile
@@ -1,82 +1,86 @@
 PORTNAME=	symengine
 DISTVERSIONPREFIX=	v
-DISTVERSION=	0.8.1
+DISTVERSION=	0.9.0
 CATEGORIES=	math
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Fast symbolic manipulation library, written in C++
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
+LIB_DEPENDS=	libboost_serialization.so:devel/boost-libs \
+		libgmp.so:math/gmp
+
 USES=		cmake compiler:c++11-lang
 USE_GITHUB=	yes
 USE_LDCONFIG=	yes
 
 CMAKE_ON=	WITH_SYMENGINE_THREAD_SAFE BUILD_SHARED_LIBS BUILD_FOR_DISTRIBUTION
 CMAKE_OFF=	BUILD_BENCHMARKS WITH_COTIRE
 
 OPTIONS_DEFINE=			ARB ECM LLVM MPC TCMALLOC ASSERT
 OPTIONS_SINGLE=			INTCLASS
 OPTIONS_SINGLE_INTCLASS=	GMP GMPXX BOOSTMP FLINT PIRANHA
 OPTIONS_DEFAULT=		ARB ECM LLVM MPC TCMALLOC FLINT # FLINT choice is based on best performance
 
 INTCLASS_DESC=		Integer class, use integers from:
 
 ARB_DESC=		Build with Arb (interval arithmetic library)
 ARB_CMAKE_BOOL=		WITH_ARB
 ARB_LIB_DEPENDS=	libarb.so:math/arb \
 			libflint.so:math/flint2 \
 			libmpfr.so:math/mpfr
 
 ECM_DESC=		Build with ECM support (Elliptic Curve Method)
 ECM_CMAKE_BOOL=		WITH_ECM
 ECM_LIB_DEPENDS=	libecm.so:math/gmp-ecm
 
 LLVM_DESC=		Build with LLVM
 LLVM_CMAKE_BOOL=	WITH_LLVM
-LLVM_CMAKE_ON=		-DLLVM_INCLUDE_DIRS:STRING=${LOCALBASE}/llvm${LLVM_VERSION}/include
+LLVM_CMAKE_ON=		-DLLVM_INCLUDE_DIRS:STRING=${LOCALBASE}/llvm${LLVM_VERSION}/include \
+			-DFREEBSD_LLVM_VERSION=${LLVM_VERSION}
 LLVM_BUILD_DEPENDS=	llvm${LLVM_VERSION}>0:devel/llvm${LLVM_VERSION}
 
 MPC_DESC=		Build with MPC
 MPC_CMAKE_BOOL=		WITH_MPC
 MPC_LIB_DEPENDS=	libmpc.so:math/mpc
 
 TCMALLOC_DESC=		Use tcmalloc from google-perftools (improves performance)
 TCMALLOC_CMAKE_BOOL=	WITH_TCMALLOC
 TCMALLOC_LIB_DEPENDS=	libtcmalloc.so:devel/google-perftools
 
 ASSERT_CMAKE_BOOL=	WITH_SYMENGINE_ASSERT
 
 GMP_DESC=		gmp (supports arbitrary fp precision)
 GMP_CMAKE_ON=		-DINTEGER_CLASS:STRING=gmp
 GMP_LIB_DEPENDS=	libgmp.so:math/gmp \
 			libmpfr.so:math/mpfr
 
 GMPXX_DESC=		gmpxx
 GMPXX_CMAKE_ON=		-DINTEGER_CLASS:STRING=gmpxx
 GMPXX_LIB_DEPENDS=	libgmp.so:math/gmp
 
 BOOSTMP_DESC=		boostmp (no arbitrary fp precision)
 BOOSTMP_CMAKE_ON=	-DINTEGER_CLASS:STRING=boostmp
 BOOSTMP_BUILD_DEPENDS=	${LOCALBASE}/include/boost/multiprecision/cpp_int.hpp:devel/boost-libs
 
 FLINT_DESC=		flint (supports arbitrary fp precision, best performance)
 FLINT_CMAKE_ON=		-DINTEGER_CLASS:STRING=flint
 FLINT_LIB_DEPENDS=	libflint.so:math/flint2 \
 			libgmp.so:math/gmp \
 			libmpfr.so:math/mpfr
 
 PIRANHA_DESC=		piranha
 PIRANHA_CMAKE_ON=	-DINTEGER_CLASS:STRING=piranha
 PIRANHA_BUILD_DEPENDS=	piranha>0:math/piranha
 
 LLVM_VERSION=	${LLVM_DEFAULT}
 
 do-test: # one test fails: https://github.com/symengine/symengine/issues/1697
 	@cd ${BUILD_WRKSRC} && \
 		${SETENV} ${CONFIGURE_ENV} ${CMAKE_BIN} ${CMAKE_ARGS} -DBUILD_TESTING:BOOL=ON ${CMAKE_SOURCE_PATH} && \
 		${SETENV} ${MAKE_ENV} ${MAKE_CMD} ${MAKE_ARGS} ${ALL_TARGET} && \
 		${SETENV} ${MAKE_ENV} ${MAKE_CMD} ${MAKE_ARGS} test
 
 .include <bsd.port.mk>
diff --git a/math/symengine/distinfo b/math/symengine/distinfo
index b89ce8d92112..65bccd283df8 100644
--- a/math/symengine/distinfo
+++ b/math/symengine/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1634862847
-SHA256 (symengine-symengine-v0.8.1_GH0.tar.gz) = 41eb6ae6901c09e53d7f61f0758f9201e81fc534bfeecd4b2bd4b4e6f6768693
-SIZE (symengine-symengine-v0.8.1_GH0.tar.gz) = 733007
+TIMESTAMP = 1651339442
+SHA256 (symengine-symengine-v0.9.0_GH0.tar.gz) = dcf174ac708ed2acea46691f6e78b9eb946d8a2ba62f75e87cf3bf4f0d651724
+SIZE (symengine-symengine-v0.9.0_GH0.tar.gz) = 878574
diff --git a/math/symengine/files/patch-CMakeLists.txt b/math/symengine/files/patch-CMakeLists.txt
new file mode 100644
index 000000000000..ace2eaf07b25
--- /dev/null
+++ b/math/symengine/files/patch-CMakeLists.txt
@@ -0,0 +1,13 @@
+- fix requested LLVM version
+
+--- CMakeLists.txt.orig	2022-04-30 17:48:46 UTC
++++ CMakeLists.txt
+@@ -396,7 +396,7 @@ set(WITH_LLVM no
+ 
+ if (WITH_LLVM)
+     set(SYMENGINE_LLVM_COMPONENTS asmparser core executionengine instcombine mcjit native nativecodegen scalaropts vectorize support transformutils)
+-    find_package(LLVM REQUIRED ${SYMENGINE_LLVM_COMPONENTS})
++    find_package(LLVM ${FREEBSD_LLVM_VERSION} REQUIRED ${SYMENGINE_LLVM_COMPONENTS})
+     set(LLVM_MINIMUM_REQUIRED_VERSION "3.8")
+     if (LLVM_PACKAGE_VERSION LESS ${LLVM_MINIMUM_REQUIRED_VERSION})
+ 	    message(FATAL_ERROR "LLVM version found ${LLVM_PACKAGE_VERSION} is too old.
diff --git a/math/symengine/pkg-plist b/math/symengine/pkg-plist
index e16fc65af316..2ce1e51ecf23 100644
--- a/math/symengine/pkg-plist
+++ b/math/symengine/pkg-plist
@@ -1,92 +1,140 @@
 include/symengine/add.h
 include/symengine/assumptions.h
 include/symengine/basic-inl.h
 include/symengine/basic-methods.inc
 include/symengine/basic.h
 include/symengine/complex.h
 include/symengine/complex_double.h
 include/symengine/complex_mpc.h
 include/symengine/constants.h
 include/symengine/cwrapper.h
 include/symengine/derivative.h
 include/symengine/dict.h
 include/symengine/diophantine.h
 include/symengine/eval.h
 include/symengine/eval_arb.h
 include/symengine/eval_double.h
 include/symengine/eval_mpc.h
 include/symengine/eval_mpfr.h
 include/symengine/expression.h
 include/symengine/fields.h
 include/symengine/finitediff.h
 include/symengine/flint_wrapper.h
 include/symengine/functions.h
 include/symengine/infinity.h
 include/symengine/integer.h
 include/symengine/lambda_double.h
 include/symengine/llvm_double.h
 include/symengine/logic.h
 include/symengine/matrix.h
 include/symengine/monomials.h
 include/symengine/mp_class.h
 include/symengine/mp_wrapper.h
 include/symengine/mul.h
 include/symengine/nan.h
 include/symengine/ntheory.h
 include/symengine/ntheory_funcs.h
 include/symengine/number.h
 include/symengine/parser.h
 include/symengine/parser/parser.h
 include/symengine/parser/sbml/sbml_parser.h
 include/symengine/parser/sbml/sbml_tokenizer.h
 include/symengine/parser/tokenizer.h
 include/symengine/polys/basic_conversions.h
 include/symengine/polys/cancel.h
 include/symengine/polys/msymenginepoly.h
 include/symengine/polys/uexprpoly.h
 include/symengine/polys/uintpoly.h
 include/symengine/polys/uintpoly_flint.h
 include/symengine/polys/uintpoly_piranha.h
 include/symengine/polys/upolybase.h
 include/symengine/polys/uratpoly.h
 include/symengine/polys/usymenginepoly.h
 include/symengine/pow.h
 include/symengine/prime_sieve.h
 include/symengine/printers.h
 include/symengine/printers/codegen.h
 include/symengine/printers/latex.h
 include/symengine/printers/mathml.h
 include/symengine/printers/sbml.h
 include/symengine/printers/strprinter.h
 include/symengine/printers/unicode.h
 include/symengine/rational.h
 include/symengine/real_double.h
 include/symengine/real_mpfr.h
 include/symengine/refine.h
 include/symengine/rings.h
+include/symengine/serialize-cereal.h
 include/symengine/series.h
 include/symengine/series_flint.h
 include/symengine/series_generic.h
 include/symengine/series_piranha.h
 include/symengine/series_visitor.h
 include/symengine/sets.h
+include/symengine/simplify.h
 include/symengine/solve.h
 include/symengine/subs.h
 include/symengine/symbol.h
 include/symengine/symengine_assert.h
 include/symengine/symengine_casts.h
 include/symengine/symengine_config.h
 include/symengine/symengine_config_cling.h
 include/symengine/symengine_exception.h
 include/symengine/symengine_export.h
 include/symengine/symengine_rcp.h
 include/symengine/test_visitors.h
+include/symengine/tuple.h
 include/symengine/type_codes.inc
+include/symengine/utilities/cereal/include/cereal/access.hpp
+include/symengine/utilities/cereal/include/cereal/archives/adapters.hpp
+include/symengine/utilities/cereal/include/cereal/archives/binary.hpp
+include/symengine/utilities/cereal/include/cereal/archives/json.hpp
+include/symengine/utilities/cereal/include/cereal/archives/portable_binary.hpp
+include/symengine/utilities/cereal/include/cereal/archives/xml.hpp
+include/symengine/utilities/cereal/include/cereal/cereal.hpp
+include/symengine/utilities/cereal/include/cereal/details/helpers.hpp
+include/symengine/utilities/cereal/include/cereal/details/polymorphic_impl.hpp
+include/symengine/utilities/cereal/include/cereal/details/polymorphic_impl_fwd.hpp
+include/symengine/utilities/cereal/include/cereal/details/static_object.hpp
+include/symengine/utilities/cereal/include/cereal/details/traits.hpp
+include/symengine/utilities/cereal/include/cereal/details/util.hpp
+include/symengine/utilities/cereal/include/cereal/macros.hpp
+include/symengine/utilities/cereal/include/cereal/specialize.hpp
+include/symengine/utilities/cereal/include/cereal/types/array.hpp
+include/symengine/utilities/cereal/include/cereal/types/atomic.hpp
+include/symengine/utilities/cereal/include/cereal/types/base_class.hpp
+include/symengine/utilities/cereal/include/cereal/types/bitset.hpp
+include/symengine/utilities/cereal/include/cereal/types/boost_variant.hpp
+include/symengine/utilities/cereal/include/cereal/types/chrono.hpp
+include/symengine/utilities/cereal/include/cereal/types/common.hpp
+include/symengine/utilities/cereal/include/cereal/types/complex.hpp
+include/symengine/utilities/cereal/include/cereal/types/concepts/pair_associative_container.hpp
+include/symengine/utilities/cereal/include/cereal/types/deque.hpp
+include/symengine/utilities/cereal/include/cereal/types/forward_list.hpp
+include/symengine/utilities/cereal/include/cereal/types/functional.hpp
+include/symengine/utilities/cereal/include/cereal/types/list.hpp
+include/symengine/utilities/cereal/include/cereal/types/map.hpp
+include/symengine/utilities/cereal/include/cereal/types/memory.hpp
+include/symengine/utilities/cereal/include/cereal/types/optional.hpp
+include/symengine/utilities/cereal/include/cereal/types/polymorphic.hpp
+include/symengine/utilities/cereal/include/cereal/types/queue.hpp
+include/symengine/utilities/cereal/include/cereal/types/set.hpp
+include/symengine/utilities/cereal/include/cereal/types/stack.hpp
+include/symengine/utilities/cereal/include/cereal/types/string.hpp
+include/symengine/utilities/cereal/include/cereal/types/tuple.hpp
+include/symengine/utilities/cereal/include/cereal/types/unordered_map.hpp
+include/symengine/utilities/cereal/include/cereal/types/unordered_set.hpp
+include/symengine/utilities/cereal/include/cereal/types/utility.hpp
+include/symengine/utilities/cereal/include/cereal/types/valarray.hpp
+include/symengine/utilities/cereal/include/cereal/types/variant.hpp
+include/symengine/utilities/cereal/include/cereal/types/vector.hpp
+include/symengine/utilities/cereal/include/cereal/version.hpp
+include/symengine/utilities/stream_fmt.h
 include/symengine/visitor.h
 lib/cmake/symengine/SymEngineConfig.cmake
 lib/cmake/symengine/SymEngineConfigVersion.cmake
 lib/cmake/symengine/SymEngineTargets-%%CMAKE_BUILD_TYPE%%.cmake
 lib/cmake/symengine/SymEngineTargets.cmake
 lib/libsymengine.so
-lib/libsymengine.so.0.8
-lib/libsymengine.so.0.8.1
+lib/libsymengine.so.0.9
+lib/libsymengine.so.0.9.0