diff --git a/sdk_container/src/third_party/portage-stable/dev-python/fasteners/Manifest b/sdk_container/src/third_party/portage-stable/dev-python/fasteners/Manifest
index 5c4944fb52..2b4a392ade 100644
--- a/sdk_container/src/third_party/portage-stable/dev-python/fasteners/Manifest
+++ b/sdk_container/src/third_party/portage-stable/dev-python/fasteners/Manifest
@@ -1 +1,2 @@
 DIST fasteners-0.19.gh.tar.gz 43188 BLAKE2B c30f4dc3da6605aa2552f58ae1071b51efefe2aea59ca8815fd50eebdbe7e826756cd9923485d6fb99dcc39196def485f4c1346a234bc7af09e2426c84b6a0d3 SHA512 47db216ff5bad5c669ca2d9be0ee09feba4a3d55ed0eac8d3623bd3d112b0b87fb9019f8785d035ec32ad9fa9e4ae7d1c92a576c97eec29acc82711d7e71a465
+DIST fasteners-0.20.gh.tar.gz 42740 BLAKE2B 89d3f3432bff3ec6716a96b51867227a4cebfe05cb8ed9554480dbcc0d31b2afa1d173b3dd4cf786688f74e994c6ab390c77898fc045b5636d10ab626103e57c SHA512 539ce5b16f70a73fe6b7296a1bab3b751eff7b7385b980eba3e4d6e42eb263448fd074f325529a30d982e1c366a122aef46bc359578a370ef1278225c09a5f71
diff --git a/sdk_container/src/third_party/portage-stable/dev-python/fasteners/fasteners-0.20.ebuild b/sdk_container/src/third_party/portage-stable/dev-python/fasteners/fasteners-0.20.ebuild
new file mode 100644
index 0000000000..7b3769d5b9
--- /dev/null
+++ b/sdk_container/src/third_party/portage-stable/dev-python/fasteners/fasteners-0.20.ebuild
@@ -0,0 +1,37 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+DISTUTILS_USE_PEP517=setuptools
+PYTHON_COMPAT=( python3_{11..13} )
+
+inherit distutils-r1
+
+DESCRIPTION="Python package that provides useful locks"
+HOMEPAGE="
+	https://github.com/harlowja/fasteners/
+	https://pypi.org/project/fasteners/
+"
+SRC_URI="
+	https://github.com/harlowja/fasteners/archive/${PV}.tar.gz
+		-> ${P}.gh.tar.gz
+"
+
+LICENSE="Apache-2.0"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~x64-macos"
+
+BDEPEND="
+	test? (
+		dev-python/diskcache[${PYTHON_USEDEP}]
+		dev-python/more-itertools[${PYTHON_USEDEP}]
+	)
+"
+
+EPYTEST_PLUGINS=()
+distutils_enable_tests pytest
+
+EPYTEST_IGNORE=(
+	tests/test_eventlet.py
+)