diff --git a/dev-util/glslang/Manifest b/dev-util/glslang/Manifest
index b802de308396b..6da256a338775 100644
--- a/dev-util/glslang/Manifest
+++ b/dev-util/glslang/Manifest
@@ -1 +1,2 @@
 DIST glslang-1.4.309.0.tar.gz 3956306 BLAKE2B cc3c703f789612ed74740662d6ede1546886d226fcf6d1523893c5d623ef2302611ff5b210e63110805a0be8d4bb5f7bb330eb6daeff8ffae1b8d450b1b9d648 SHA512 89ec2ce7fc4532370234f8bc0172ba89af94b96be29aab1fca089a9209c462033d88ce9c3ce45e9d117ed75fab900037c398fc0a7eda54e95c4f80fa9d2191c5
+DIST glslang-1.4.313.0.tar.gz 4026042 BLAKE2B 439690d9efdd99616d07b0006eea75ef29df4ad8495e00e55df7febfd7e0a52007dae66b5426591f816387167a6d4747cd80c87fd13956fe2afb14b00a299935 SHA512 2ebbe494e39080b713200a00ed1d1db09f712c0455cfc8293c687d197b9be4e1a83939ee3d16588d6f4691c810dbb894207f285c4441679b05677bf544e5f82e
diff --git a/dev-util/glslang/glslang-1.4.313.0.ebuild b/dev-util/glslang/glslang-1.4.313.0.ebuild
new file mode 100644
index 0000000000000..796da84a7254a
--- /dev/null
+++ b/dev-util/glslang/glslang-1.4.313.0.ebuild
@@ -0,0 +1,41 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{11..14} )
+inherit cmake-multilib python-any-r1
+
+if [[ ${PV} == *9999* ]]; then
+	EGIT_REPO_URI="https://github.com/KhronosGroup/${PN}.git"
+	inherit git-r3
+else
+	GIT_COMMIT="vulkan-sdk-${PV}"
+	SRC_URI="https://github.com/KhronosGroup/${PN}/archive/${GIT_COMMIT}.tar.gz -> ${P}.tar.gz"
+	KEYWORDS="~amd64 ~arm ~arm64 ~loong ~ppc ~ppc64 ~riscv ~x86"
+	S="${WORKDIR}/${PN}-${GIT_COMMIT}"
+fi
+
+DESCRIPTION="Khronos reference front-end for GLSL and ESSL, and sample SPIR-V generator"
+HOMEPAGE="https://www.khronos.org/opengles/sdk/tools/Reference-Compiler/ https://github.com/KhronosGroup/glslang"
+
+LICENSE="BSD"
+SLOT="0/15.1"
+
+# Bug 698850
+RESTRICT="test"
+
+BDEPEND="${PYTHON_DEPS}
+	~dev-util/spirv-tools-${PV}[${MULTILIB_USEDEP}]
+"
+
+DEPEND="~dev-util/spirv-tools-${PV}[${MULTILIB_USEDEP}]"
+RDEPEND="${DEPEND}"
+
+multilib_src_configure() {
+	local mycmakeargs=(
+		-DENABLE_PCH=OFF
+		-DALLOW_EXTERNAL_SPIRV_TOOLS=ON
+	)
+	cmake_src_configure
+}