diff --git a/sci-mathematics/z3/Manifest b/sci-mathematics/z3/Manifest
index d2be3bba324d4..bd92b523cab6d 100644
--- a/sci-mathematics/z3/Manifest
+++ b/sci-mathematics/z3/Manifest
@@ -1,2 +1,3 @@
 DIST z3-4.15.4.tar.gz 6060031 BLAKE2B 9386aa55f21f8bb39bc6a2fa3cc84198f93fa2f2948f93466d93f34b6d92e1e96caa274bc49ee407e6dc6cabdf7f3cdce85d02e927f3a18af9bb5d6a1c7d23c7 SHA512 3037a6c9077cf5b5bbc9db89973311e66233144ad6c8fc8da9fb2aa35bb34944068874868cf571b247130251a8361cbd1e24288768cc49e4166985cf0ca921a2
 DIST z3-4.15.5.tar.gz 7901717 BLAKE2B ab57a1b5e62d259993dd44529f9065a9e04026fbca34bb5b920a57185a7316d3ef81f48c5346cc62317a02c7cc3d1688306decbb2e453ec2a6dc53f2c02d621f SHA512 4c88f972256e14dc1291b55041cd3b5f1bed69ec94e2d0a3ce60044c3774644ad9c7bc3da1b4017aa787ca6c76d560f33ed8fd01c39ebaca53155b2ce7fbb59a
+DIST z3-4.15.7.tar.gz 7898895 BLAKE2B f90acc4dba363ec2c48cdb76e70d4c95b5271003f06e5dc6fd6183c65e0e875ac9df991375304afb155781a07d1ede7712802464d116d841a86dacd7f519e6a5 SHA512 7771e762c5413a67434027ef86f06cd7596b1bc187c093ebc63e2abe425374d098d84a169ffdb2ebab6e9af989046dd207e8a21e0e640d7a54003f496d6c30a8
diff --git a/sci-mathematics/z3/z3-4.15.7.ebuild b/sci-mathematics/z3/z3-4.15.7.ebuild
new file mode 100644
index 0000000000000..a8c4d1fc55338
--- /dev/null
+++ b/sci-mathematics/z3/z3-4.15.7.ebuild
@@ -0,0 +1,107 @@
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{11..14} )
+
+inherit cmake-multilib java-pkg-opt-2 python-single-r1
+
+DESCRIPTION="An efficient theorem prover"
+HOMEPAGE="https://github.com/Z3Prover/z3/"
+SRC_URI="https://github.com/Z3Prover/z3/archive/${P}.tar.gz"
+S=${WORKDIR}/z3-${P}
+
+LICENSE="MIT"
+SLOT="0/$(ver_cut 1-2)"
+KEYWORDS="~amd64 ~arm ~arm64 ~loong ~mips ~ppc ~ppc64 ~riscv ~sparc ~x86"
+IUSE="doc examples gmp isabelle java python"
+REQUIRED_USE="${PYTHON_REQUIRED_USE}"
+
+RDEPEND="
+	${PYTHON_DEPS}
+	gmp? ( dev-libs/gmp:0=[cxx(+),${MULTILIB_USEDEP}] )
+"
+DEPEND="
+	${RDEPEND}
+	java? ( >=virtual/jdk-1.8 )
+"
+BDEPEND="
+	doc? ( app-text/doxygen[dot] )
+"
+
+CMAKE_BUILD_TYPE=RelWithDebInfo
+
+src_prepare() {
+	cmake_src_prepare
+	java-pkg-opt-2_src_prepare
+}
+
+multilib_src_configure() {
+	local mycmakeargs=(
+		-DCMAKE_INSTALL_DOCDIR="${EPREFIX}/usr/share/doc/${PF}"
+		-DZ3_USE_LIB_GMP=$(usex gmp)
+		-DZ3_ENABLE_EXAMPLE_TARGETS=OFF
+		-DZ3_BUILD_DOCUMENTATION=$(multilib_native_usex doc)
+		-DZ3_BUILD_PYTHON_BINDINGS=$(multilib_native_usex python)
+		-DZ3_BUILD_JAVA_BINDINGS=$(multilib_native_usex java)
+		-DZ3_INCLUDE_GIT_DESCRIBE=OFF
+		-DZ3_INCLUDE_GIT_HASH=OFF
+	)
+
+	multilib_is_native_abi && use java && mycmakeargs+=( -DJAVA_HOME="$(java-config -g JAVA_HOME )" )
+
+	cmake_src_configure
+}
+
+multilib_src_test() {
+	cmake_build test-z3
+	set -- "${BUILD_DIR}"/test-z3 /a
+	echo "${@}" >&2
+	"${@}" || die
+}
+
+multilib_src_install_all() {
+	dodoc README.md
+	use examples && dodoc -r examples
+	use python && python_optimize
+
+	if use isabelle; then
+		insinto /usr/share/Isabelle/contrib/${P}/etc
+		newins - settings <<-EOF
+			Z3_COMPONENT="\$COMPONENT"
+			Z3_HOME="${EPREFIX}/usr/bin"
+			Z3_SOLVER="${EPREFIX}/usr/bin/z3"
+			Z3_REMOTE_SOLVER="z3"
+			Z3_VERSION="${PV}"
+			Z3_INSTALLED="yes"
+			Z3_NON_COMMERCIAL="yes"
+		EOF
+	fi
+}
+
+pkg_postinst() {
+	if use isabelle; then
+		if [[ -f ${ROOT}/etc/isabelle/components ]]; then
+			sed -e "/contrib\/${PN}-[0-9.]*/d" \
+				-i "${ROOT}/etc/isabelle/components" || die
+			cat <<-EOF >> "${ROOT}/etc/isabelle/components" || die
+				contrib/${P}
+			EOF
+		fi
+	fi
+}
+
+pkg_postrm() {
+	if use isabelle; then
+		if [[ ! ${REPLACING_VERSIONS} ]]; then
+			if [[ -f "${ROOT}/etc/isabelle/components" ]]; then
+				# Note: this sed should only match the version of this ebuild
+				# Which is what we want as we do not want to remove the line
+				# of a new Isabelle component being installed during an upgrade.
+				sed -e "/contrib\/${P}/d" \
+					-i "${ROOT}/etc/isabelle/components" || die
+			fi
+		fi
+	fi
+}