diff --git a/sci-mathematics/cliquer/Manifest b/sci-mathematics/cliquer/Manifest
index efd65b05c8009..613a0a7b781aa 100644
--- a/sci-mathematics/cliquer/Manifest
+++ b/sci-mathematics/cliquer/Manifest
@@ -1 +1,2 @@
 DIST cliquer-1.22.tar.gz 416433 BLAKE2B 3f43d443b1ecfef599213da99ffa15b5077392dd8d1bebdd0f5db73898d1fe997d6eabe6dbdb29852d40355228f082cfa7e3198be90dc9166965b90f062cae69 SHA512 3285cb0a3987ff730d9f9b25419a98201f399daf28444179ba8902211ddda87adcc7189f5b94f062d0648039a1b6217b80c8db482887d7dc8552b20459eff861
+DIST cliquer-1.23.tar.gz 465158 BLAKE2B e83dccdeff5cc2659e4f63a12121c4257ea100616df8559cd964f5368d1d44c9fb12fd32fe6a3a27fa7cddab363ec670133f33c505794010e9d9ccbaaf0dc2b1 SHA512 ba3af2de31bfc34a742af7ee6edead648b0acc2b47c2afcc3a408ffb651c4d424778bf1aa41dd843a3028c7d30f4daa15b15964b8fac2e1b36686eebc85acf3c
diff --git a/sci-mathematics/cliquer/cliquer-1.23.ebuild b/sci-mathematics/cliquer/cliquer-1.23.ebuild
new file mode 100644
index 0000000000000..5a9fe144b1759
--- /dev/null
+++ b/sci-mathematics/cliquer/cliquer-1.23.ebuild
@@ -0,0 +1,30 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+DESCRIPTION="C routines for finding cliques in an arbitrary weighted graph"
+
+# autocliquer is a fork of cliquer (whose last release was in 2010) by
+# one of the SageMath developers with an autotools build system.
+HOMEPAGE="https://users.aalto.fi/~pat/cliquer.html
+	https://github.com/dimpase/autocliquer"
+
+# The default github tarball doesn't contain the generated autotools files (like
+# the ./configure script), but this is a manual upload
+SRC_URI="https://github.com/dimpase/autocliquer/releases/download/v${PV}/${P}.tar.gz"
+
+# The README has "or (at your option) any later version"
+LICENSE="GPL-2+"
+SLOT="0"
+KEYWORDS="~amd64 ~arm ~riscv ~x86"
+IUSE="static-libs"
+
+src_configure() {
+	econf $(use_enable static-libs static)
+}
+
+src_install() {
+	default
+	find "${ED}" -name '*.la' -delete || die
+}