diff --git a/net-misc/megasync/Manifest b/net-misc/megasync/Manifest
index 6db6245628..3638fb5a90 100644
--- a/net-misc/megasync/Manifest
+++ b/net-misc/megasync/Manifest
@@ -1,2 +1,4 @@
 DIST megasync-5.8.0.2.tar.gz 23480049 BLAKE2B e1324a5cafb8056d5f2feac1de789afce35e86638c9985fd2f785c174d7594478f4861f120a0655cece5a84a45826863d3758b2d4e1cc5e4454550281a73dfb7 SHA512 0a6c6a1feb5908fce1969410ece944d9d663dae1ed37a22b69830d7c1825861f7b9d59d3c18802202306cf7e898b500d7b2fbc481263be5f2363b3cf2d63818e
+DIST megasync-5.9.0.3.tar.gz 24888074 BLAKE2B 44278e7da30819654775dfe71059251c7846e4ebb972b4fefd30d327604ed6c1bd9d899976a56bca7d371e7314378e96e68d265f513f758a1157d87c1fc5a8f7 SHA512 3777c630c44c6042cceeb99a3757ce0d2d9ded9d768be843ce3b74fdaa0d5be89c8a3c341f4f0dc822d0799ac528c3d42eb33b88484eb07271a9917914fe7b8f
 DIST megasync-sdk-5.8.0.2.tar.gz 4064275 BLAKE2B 831823ba513202a972f90ba183958fe8db4012514239b908da4ce49558b194f31ba01e0ffe378fe8ce3ba8e857daa2347a4d4ae1fd0793dc8f4b1f769a49108a SHA512 92a0b5a30b3839f657531dad6298d88c5e08204be28a23086ab3dd5a3f3b3ff83cd42a72df38a803afcddce855a1d2ecaeee82e7d5becae9510f25fc88e9c536
+DIST megasync-sdk-5.9.0.3.tar.gz 4118381 BLAKE2B d722d6fc871354d01e77a50fc0d071396463d3d9485f8197e7d75a9a5af05bac16c3b15111c2b328156d8467f87ab13f2585998c3cabda298cfcc7eb283684be SHA512 f49162ea1c73a5e63408693ab770b454b7ba4252321ef3cd50b7fd2d22f2a27a7df68cbbf102b8bf5220bc313809c3737c1c32f766999f7348c63a60dc68de29
diff --git a/net-misc/megasync/megasync-5.9.0.3.ebuild b/net-misc/megasync/megasync-5.9.0.3.ebuild
new file mode 100644
index 0000000000..36db51450b
--- /dev/null
+++ b/net-misc/megasync/megasync-5.9.0.3.ebuild
@@ -0,0 +1,148 @@
+# Copyright 2023-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake flag-o-matic qmake-utils xdg
+
+DESCRIPTION="The official Qt-based program for syncing your MEGA account in your PC"
+HOMEPAGE="
+	https://mega.io
+	https://github.com/meganz/MEGAsync
+"
+
+MEGA_SDK_REV="7b9051370b97cb15182fb6675a4f0c70b6153153" # commit of src/MEGASync/mega submodule
+MEGA_TAG_SUFFIX="Linux"
+SRC_URI="
+	https://github.com/meganz/MEGAsync/archive/v${PV}_${MEGA_TAG_SUFFIX}.tar.gz -> ${P}.tar.gz
+	https://github.com/meganz/sdk/archive/${MEGA_SDK_REV}.tar.gz -> ${PN}-sdk-${PV}.tar.gz
+"
+S="${WORKDIR}"/MEGAsync-${PV}_${MEGA_TAG_SUFFIX}
+
+LICENSE="MEGA"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE="mediainfo nautilus nemo thumbnail thunar"
+
+DEPEND="
+	dev-db/sqlite:3
+	dev-libs/crypto++:=
+	dev-libs/icu:=
+	dev-libs/libsodium:=
+	dev-libs/libuv:=
+	dev-libs/openssl:0=
+	dev-qt/qtconcurrent:5
+	dev-qt/qtcore:5
+	dev-qt/qtdbus:5
+	dev-qt/qtdeclarative:5
+	dev-qt/qtgui:5
+	dev-qt/qtnetwork:5
+	dev-qt/qtimageformats:5
+	dev-qt/qtsvg:5
+	dev-qt/qtwidgets:5
+	dev-qt/qtx11extras:5
+	net-dns/c-ares:=
+	net-misc/curl[ssl]
+	sys-libs/zlib
+	x11-libs/libxcb:=
+	mediainfo? (
+		media-libs/libmediainfo
+		media-libs/libzen
+	)
+	nautilus? (
+		dev-libs/glib:2
+		>=gnome-base/nautilus-43
+	)
+	nemo? (
+		dev-libs/glib:2
+		gnome-extra/nemo
+	)
+	thumbnail? (
+		media-libs/freeimage
+		media-video/ffmpeg:=
+	)
+	thunar? (
+		dev-libs/glib:2
+		xfce-base/thunar:=
+	)
+"
+RDEPEND="
+	${DEPEND}
+	dev-qt/qtquickcontrols:5
+	dev-qt/qtquickcontrols2:5
+"
+BDEPEND="
+	dev-qt/linguist-tools:5
+	virtual/pkgconfig
+"
+
+PATCHES=(
+	"${FILESDIR}/${PN}-4.10.0.0_ffmpeg6.patch"
+	"${FILESDIR}/${PN}-5.6.0.0-remove-clang-format.patch"
+	"${FILESDIR}/${PN}-5.7.0.0-disable-forced-options.patch"
+	"${FILESDIR}/${PN}-5.7.0.0-fix-install-dir.patch"
+	"${FILESDIR}/${PN}-5.7.0.0-link-zlib.patch"
+	"${FILESDIR}/${PN}-5.7.0.0-rename-libcryptopp.patch"
+	"${FILESDIR}/${PN}-5.8.0.2-clang.patch"
+)
+
+nemo_run() {
+	if use nemo; then
+		cd "${S}/src/MEGAShellExtNemo" || die
+		"$@"
+	fi
+}
+
+thunar_run() {
+	if use thunar; then
+		cd "${S}/src/MEGAShellExtThunar" || die
+		"$@"
+	fi
+}
+
+src_prepare() {
+	rmdir src/MEGASync/mega || die
+	mv "${WORKDIR}/sdk-${MEGA_SDK_REV}" src/MEGASync/mega || die
+
+	cmake_src_prepare
+}
+
+src_configure() {
+	# https://github.com/meganz/sdk/issues/2679
+	append-cppflags -DNDEBUG
+
+	local mycmakeargs=(
+		# build internal libs as static
+		-DBUILD_SHARED_LIBS=OFF
+		-DCMAKE_MODULE_PATH="${S}/src/MEGASync/mega/cmake/modules/packages"
+		-DENABLE_DESKTOP_APP_WERROR=OFF
+		-DENABLE_DESKTOP_UPDATE_GEN=OFF
+		-DENABLE_DESIGN_TOKENS_IMPORTER=OFF
+		-DENABLE_ISOLATED_GFX=$(usex thumbnail)
+		-DENABLE_LINUX_EXT=$(usex nautilus)
+		-DUSE_FFMPEG=$(usex thumbnail)
+		-DUSE_FREEIMAGE=$(usex thumbnail)
+		-DUSE_MEDIAINFO=$(usex mediainfo)
+		-DUSE_PDFIUM=OFF
+		-DUSE_READLINE=OFF
+	)
+	cmake_src_configure
+
+	unset mycmakeargs
+	nemo_run eqmake5 DEFINES=no_desktop
+	thunar_run eqmake5
+}
+
+src_compile() {
+	cmake_src_compile
+
+	nemo_run emake
+	thunar_run emake
+}
+
+src_install() {
+	cmake_src_install
+
+	nemo_run emake INSTALL_ROOT="${D}" install
+	thunar_run emake INSTALL_ROOT="${D}" install
+}