diff --git a/sys-apps/ucspi-unix/ucspi-unix-1.0-r1.ebuild b/sys-apps/ucspi-unix/ucspi-unix-1.0-r1.ebuild
new file mode 100644
index 0000000000000..f22d4134ea793
--- /dev/null
+++ b/sys-apps/ucspi-unix/ucspi-unix-1.0-r1.ebuild
@@ -0,0 +1,28 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit toolchain-funcs
+
+DESCRIPTION="UCSPI implementation for Unix domain sockets"
+HOMEPAGE="https://untroubled.org/ucspi-unix/"
+SRC_URI="https://untroubled.org/ucspi-unix/archive/${P}.tar.gz"
+
+LICENSE="GPL-2+"
+SLOT="0"
+KEYWORDS="~amd64 ~loong ~riscv ~sparc ~x86"
+
+# We statically link bglibs.
+DEPEND=">=dev-libs/bglibs-2.04"
+
+src_configure() {
+	echo "$(tc-getCC) ${CFLAGS} -D_GNU_SOURCE" > conf-cc || die
+	echo "$(tc-getCC) ${LDFLAGS}" > conf-ld || die
+}
+
+src_install() {
+	dobin unixserver unixclient unixcat
+	doman unixserver.1 unixclient.1
+	dodoc NEWS PROTOCOL README
+}