diff --git a/dev-cpp/glibmm/Manifest b/dev-cpp/glibmm/Manifest
index c4e3824d74dd4..22ec80bf53138 100644
--- a/dev-cpp/glibmm/Manifest
+++ b/dev-cpp/glibmm/Manifest
@@ -1,2 +1,3 @@
 DIST glibmm-2.66.8.tar.xz 8597344 BLAKE2B 43ce7739259b928ed71946b3de8090aab9c4c900d8233dbe16cef2a1ff9b9521f304b50bf4a57c9398aaa8deed882600814551404991d1cdd09b3c45bb461cc7 SHA512 4ebf203324d3ee95c47012915efb39d4dc59eb7a6f337e7b8c7c0b3589574b07967974363931b0d4159618f88178b04715b2c359c3dc3f67a7781bfac0d9f277
 DIST glibmm-2.84.0.tar.xz 9596876 BLAKE2B efbf89adaed0d673bc6391f44205cdbfa5400c4137a199cb69bb7580b81ae0e2d2304906b0b15409c68b369929d44fb2b9134d23638d7244a69f92ccfc7a8402 SHA512 dbe7d7b39ccf4a4acb0a67a0eab1a4b5f47dff3c0ae645aa2eaca498b646ee2da0f6f8ef81b3253621119d94bcdc3b1d4dcbf234eedfbd20aaa065c430e67daf
+DIST glibmm-2.88.0.tar.xz 9523144 BLAKE2B 614ef69c23345b4080656e55c24cb4781682d6a5cbb05377022921fac533509c7187590080ce2c1819f57d364bc6d9528e2aa2c62cdd71741b91f592a7da6825 SHA512 550c9087ead950de3d7de2eac29ea7cab23c70ce1a0081c162df0369765d547d754dc296a0f06ab494df01f43f7bab29dfb88b6d2fdf920eebc3aef896dff1f0
diff --git a/dev-cpp/glibmm/glibmm-2.88.0.ebuild b/dev-cpp/glibmm/glibmm-2.88.0.ebuild
new file mode 100644
index 0000000000000..7d912b366079c
--- /dev/null
+++ b/dev-cpp/glibmm/glibmm-2.88.0.ebuild
@@ -0,0 +1,52 @@
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+PYTHON_COMPAT=( python3_{11..14} )
+inherit gnome.org meson-multilib python-any-r1
+
+DESCRIPTION="C++ interface for glib2"
+HOMEPAGE="https://gnome.pages.gitlab.gnome.org/glibmm/"
+
+LICENSE="LGPL-2.1+"
+SLOT="2.68"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~mips ~ppc ~ppc64 ~riscv ~sparc ~x86"
+IUSE="gtk-doc debug test"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	>=dev-libs/glib-2.87.3:2[${MULTILIB_USEDEP}]
+	dev-libs/libsigc++:3[gtk-doc?,${MULTILIB_USEDEP}]
+"
+DEPEND="${RDEPEND}"
+BDEPEND="
+	${PYTHON_DEPS}
+	virtual/pkgconfig
+	gtk-doc? (
+		app-text/doxygen[dot]
+		dev-lang/perl
+		dev-libs/libxslt
+	)
+"
+
+src_prepare() {
+	default
+
+	# giomm_tls_client requires FEATURES=-network-sandbox and glib-networking rdep
+	sed -i -e '/giomm_tls_client/d' tests/meson.build || die
+
+	if ! use test; then
+		sed -i -e "/^subdir('tests')/d" meson.build || die
+	fi
+}
+
+multilib_src_configure() {
+	local emesonargs=(
+		-Dwarnings=min
+		-Dbuild-deprecated-api=true
+		$(meson_native_use_bool gtk-doc build-documentation)
+		$(meson_use debug debug-refcounting)
+		-Dbuild-examples=false
+	)
+	meson_src_configure
+}