diff --git a/dev-cpp/msgpack-cxx/Manifest b/dev-cpp/msgpack-cxx/Manifest
index 6e465b95701d0..ad772cdd58fba 100644
--- a/dev-cpp/msgpack-cxx/Manifest
+++ b/dev-cpp/msgpack-cxx/Manifest
@@ -2,3 +2,4 @@ DIST msgpack-cxx-5.0.0.tar.gz 476103 BLAKE2B e631a47e8d39b6ad9c2dd5e782fbbd5044c
 DIST msgpack-cxx-6.0.0.tar.gz 476132 BLAKE2B 89b6505511bd8f6994a2e61661c7a33bd1aa68804c081ec2fcaf074f845caf4338ac362916af9fb0bab7285b0d0508c74b229316fa75ef8083546ac84c4ca95d SHA512 90f89216676af5a656d570fbff5a716d1177fa1941b0a928b2da20e0b6cd6d0ca880b7369e085dbbca944499c05694a73df919042d8cd78498ed4b34b77a0e9d
 DIST msgpack-cxx-6.1.0.tar.gz 478452 BLAKE2B 14c6e28ab02957e6313a01002d05c23e2599f433656c8ea8033eb338c6e8b97d10e00a91e1e67bc3b944c3f9b46ad1ea11fc6905d50554699caeed7bd9cbc8f7 SHA512 935453432b53d2cbecc3e34d4fb17ecd3bbc6eae9087fa3c4445c90750f144ab39ad6461cc9552eec7ed2b222315c5f6e8b30d409eb34a98bebe02e03582fd41
 DIST msgpack-cxx-6.1.1.tar.gz 476459 BLAKE2B 6ec940af9b9e02d892c5f118791015baa6b12baa60c77aaf2ff867e8836f21b4f16c436ce448cdfeb7dc8f8a9356a75f3ac829eba9059ca5d78f42a4393700ff SHA512 6a3df977e7a9c8b50feb7c88cff7a78814d1d41d2f7a657dd37d6cfcfe24f44746f40a6dd46bd5dba7ea59d94b9e40c2baa62c08d9b02168ac93c58cbff3becc
+DIST msgpack-cxx-8.0.0.tar.gz 480783 BLAKE2B c01a39012dd137e6bd767a350f21e8ddd37d982f01cc95f2b6bf7582823ea79603de332241a77871ba6d7387243cdfe7a514378d591011120dac2b01cc7c9b04 SHA512 8d3a20b04a201a7095556ab901f55ca0ca664940c4b7bebcdddd405fbb3f052fb38720e49aec5259a5513f2c272b9584d8b108139fb7de7d63438ee4258cdfd9
diff --git a/dev-cpp/msgpack-cxx/msgpack-cxx-8.0.0.ebuild b/dev-cpp/msgpack-cxx/msgpack-cxx-8.0.0.ebuild
new file mode 100644
index 0000000000000..60d0874f24d62
--- /dev/null
+++ b/dev-cpp/msgpack-cxx/msgpack-cxx-8.0.0.ebuild
@@ -0,0 +1,59 @@
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake
+
+DESCRIPTION="MessagePack for C++"
+HOMEPAGE="https://msgpack.org/ https://github.com/msgpack/msgpack-c/"
+SRC_URI="https://github.com/msgpack/msgpack-c/releases/download/cpp-${PV}/${P}.tar.gz"
+
+LICENSE="Boost-1.0"
+SLOT="0"
+KEYWORDS="~amd64 ~arm ~arm64 ~riscv ~x86 ~x64-macos"
+IUSE="+boost doc examples test"
+
+REQUIRED_USE="test? ( boost )"
+
+RESTRICT="!test? ( test )"
+
+RDEPEND="boost? ( dev-libs/boost[context] )
+	!<dev-libs/msgpack-5.0.0"
+DEPEND="${RDEPEND}"
+BDEPEND="doc? ( app-text/doxygen[dot] )
+	test? ( virtual/zlib )"
+
+src_configure() {
+	local mycmakeargs=(
+		-DMSGPACK_BUILD_EXAMPLES=OFF
+		-DMSGPACK_CXX17=ON
+		-DMSGPACK_BUILD_TESTS="$(usex test)"
+		-DMSGPACK_USE_BOOST="$(usex boost)"
+		-DMSGPACK_USE_X3_PARSE="$(usex boost)"
+	)
+
+	cmake_src_configure
+}
+
+src_compile() {
+	cmake_src_compile
+
+	if use doc; then
+		cmake_build doxygen
+	fi
+}
+
+src_install() {
+	if use doc; then
+		local HTML_DOCS=( "${BUILD_DIR}"/doc_cpp/html/. )
+	fi
+
+	if use examples; then
+		docinto examples
+		dodoc -r example/.
+		docompress -x /usr/share/doc/${PF}/examples
+	fi
+
+	cmake_src_install
+}