diff --git a/net-im/deltachat-desktop-bin/Manifest b/net-im/deltachat-desktop-bin/Manifest
index ed352ff..d9e6197 100644
--- a/net-im/deltachat-desktop-bin/Manifest
+++ b/net-im/deltachat-desktop-bin/Manifest
@@ -4,3 +4,5 @@ DIST deltachat-desktop-2.49.0-arm64.tar.gz 145090262 BLAKE2B a0d69ccb18051484512
 DIST deltachat-desktop-2.49.0.tar.gz 145340382 BLAKE2B 63247cea6ca9c6d39504800a420da80f10b1c3a5e1046fff35830d67e52a0a786e715d0bfe5072af9fed56f14cb1d9d7f82246a65a67595c1c48664bf2967e70 SHA512 77399848fd9bc506641d6790a2e3afafee2d3840d3d79af513667d1e274fa0691b4482d6e16760fdfad85319131fe0a4f3f59005c3b2bcf0584fdd3656359606
 DIST deltachat-desktop-2.49.1-arm64.tar.gz 145090250 BLAKE2B 8f3d882049eac578f14b7897824b85dd242a1565f2e65eb88178333e8d187fd638d0604b7b78b0167a205ce977f69ac485cd69ea1ab3cd62259e4c5a649c14e9 SHA512 2abc961db8a6a03e60441912886d7b8123083fcb6c7ab0b85af4d0f115f3f9766ef36e3de9bbb70f8ced270b94266d1bb41a9d891188af7bbbbb8457d3dcc9aa
 DIST deltachat-desktop-2.49.1.tar.gz 145340563 BLAKE2B febe72721e91dbc26bd29d290ae85f8ca93f659acb3d19efc9accc5ee6b0a54f631ce259466cfca73ad4d7fff2386c284650988efa234069524cf5f926f6dfb3 SHA512 d66564f1ab9f23af3e187d7973bbe36269e00dc2ad06176801ffc61aa8fff25c9a92e1dfd4aa1fdd4ae7241c7500fc0a21bb2b39c0d5610ba7bbda11c91b5efa
+DIST deltachat-desktop-2.51.0-arm64.tar.gz 146501066 BLAKE2B 39776ec0a07a1f1db610e2e2582c2d7f443d62cbe3aaf873ff7e75014cb02540ee680308610f315f42a8ec38a8de6d15367f1753940f6671d45ad3bdbda56e67 SHA512 aac3daccef77628774b5a6924bad71d4725e23e180b9f873f9197f7f3e5105b1fb660f571ce985289747d680a6a94213f370ff4e3f575c69a5f2c5aa64fdd62e
+DIST deltachat-desktop-2.51.0.tar.gz 146628161 BLAKE2B 5cf471445efde2a833f4ba33ac623a2b0e7dba31cb8546e7b3552a739694e0d92076f03c0ff516af8c7e64fb611fb7694ffbb5c7e533d546f46b8236e8df3760 SHA512 8f462ca4bd085e6bc46a11f2144e000d87197ce8e14474d05d676a2d43a590827bda0d9a589655b050d1fed1455612e2d9c1731ccf75c33b7ca5883927ef5037
diff --git a/net-im/deltachat-desktop-bin/deltachat-desktop-bin-2.51.0.ebuild b/net-im/deltachat-desktop-bin/deltachat-desktop-bin-2.51.0.ebuild
new file mode 100644
index 0000000..e6ba8b6
--- /dev/null
+++ b/net-im/deltachat-desktop-bin/deltachat-desktop-bin-2.51.0.ebuild
@@ -0,0 +1,112 @@
+# Copyright 2026 Shin'ya Minazuki
+EAPI=8
+
+inherit desktop xdg
+
+DESCRIPTION="Decentralized and secure messenger app (binary)"
+HOMEPAGE="https://delta.chat"
+
+LICENSE="GPL-3"
+SLOT="0"
+KEYWORDS="-* ~amd64 ~arm64"
+
+DC_PN="${PN%-bin}"
+
+SRC_URI="
+	amd64? ( https://download.delta.chat/desktop/v${PV}/${DC_PN}-${PV}.tar.gz )
+	arm64? ( https://download.delta.chat/desktop/v${PV}/${DC_PN}-${PV}-arm64.tar.gz )
+"
+
+S="${WORKDIR}"
+
+IUSE="suid"
+
+QA_PREBUILT="*"
+
+RDEPEND="
+	app-accessibility/at-spi2-core:2[X]
+	dev-libs/expat
+	dev-libs/fribidi
+	dev-libs/glib:2
+	dev-libs/libpcre2
+	dev-libs/libunistring
+	dev-libs/nettle
+	dev-libs/nspr
+	dev-libs/nss
+	dev-libs/wayland
+	media-gfx/graphite2
+	media-libs/alsa-lib
+	media-libs/fontconfig
+	media-libs/freetype
+	media-libs/harfbuzz
+	media-libs/libpng
+	net-dns/libidn2
+	net-libs/gnutls
+	net-print/cups
+	sys-apps/dbus
+	sys-libs/glibc
+	virtual/jpeg
+	virtual/libudev
+	virtual/zlib
+	x11-libs/cairo
+	x11-libs/gdk-pixbuf:2
+	x11-libs/gtk+:3[X]
+	x11-libs/libX11
+	x11-libs/libXau
+	x11-libs/libXcomposite
+	x11-libs/libXdamage
+	x11-libs/libXdmcp
+	x11-libs/libXext
+	x11-libs/libXfixes
+	x11-libs/libXrandr
+	x11-libs/libdrm
+	x11-libs/libxcb
+	x11-libs/libxkbcommon
+	x11-libs/pango
+	x11-libs/pixman
+"
+
+RESTRICT="mirror strip"
+
+src_install() {
+	if use amd64; then
+		cd deltachat-desktop-${PV} || die
+	elif use arm64; then
+		cd deltachat-desktop-${PV}-arm64 || die
+	fi
+
+	newicon "${FILESDIR}/deltachat.png" "${DC_PN}.png"
+
+	insinto "/opt/${DC_PN}/locales"
+	doins locales/*.pak
+
+	insinto "/opt/${DC_PN}/resources"
+	doins resources/app.asar
+	insinto "/opt/${DC_PN}/resources/app.asar.unpacked"
+	doins -r resources/app.asar.unpacked/html-dist/
+
+	if use amd64; then
+		insinto "/opt/${DC_PN}/resources/app.asar.unpacked/node_modules/@deltachat"
+		doins -r resources/app.asar.unpacked/node_modules/@deltachat/stdio-rpc-server-linux-x64/
+		insinto "/opt/${DC_PN}/resources/app.asar.unpacked/node_modules/@parcel"
+		doins -r resources/app.asar.unpacked/node_modules/@parcel/watcher-linux-x64-glibc/
+		fperms 0755 "/opt/${DC_PN}/resources/app.asar.unpacked/node_modules/@deltachat/stdio-rpc-server-linux-x64/deltachat-rpc-server"
+	elif use arm64; then
+		insinto "/opt/${DC_PN}/resources/app.asar.unpacked/node_modules/@deltachat"
+		doins -r resources/app.asar.unpacked/node_modules/@deltachat/stdio-rpc-server-linux-arm64/
+		insinto "/opt/${DC_PN}/resources/app.asar.unpacked/node_modules/@parcel"
+		doins -r resources/app.asar.unpacked/node_modules/@parcel/watcher-linux-arm64-glibc/
+		fperms 0755 "/opt/${DC_PN}/resources/app.asar.unpacked/node_modules/@deltachat/stdio-rpc-server-linux-arm64/deltachat-rpc-server"
+	fi
+
+	insinto "/opt/${DC_PN}"
+	doins *.pak *.bin *.dat
+	exeinto "/opt/${DC_PN}"
+	doexe *.so *.so.* "${DC_PN}"
+
+	dosym -r "/opt/${DC_PN}/${DC_PN}" "/usr/bin/${DC_PN}"
+
+	make_desktop_entry "${DC_PN} --enable-features=WaylandWindowDecorations --ozone-platform-hint=auto %U" \
+		"Delta Chat" "${DC_PN}" "Network;InstantMessaging;" \
+		"StartupWMClass=DeltaChat"
+}