diff --git a/dev-python/boto3/Manifest b/dev-python/boto3/Manifest
index e73eb8b639eab..6e9f3a85117d6 100644
--- a/dev-python/boto3/Manifest
+++ b/dev-python/boto3/Manifest
@@ -7,5 +7,6 @@ DIST boto3-1.42.16.gh.tar.gz 1064829 BLAKE2B 315e8cec75fbc8d596fb41535cec5e9a7af
 DIST boto3-1.42.17.gh.tar.gz 1067041 BLAKE2B 74c4adba3da630a0b8ccde824f1e96327299631b0ad54b47476ec8412a8d2a809b1aa7282c518b9c1e1d0913a96603a9feeb44da9cd5deb5d6852adbf1c0edba SHA512 f2c3ff7ce6c90c02c8e9c7107e7ab88ae126d1b709336e9483be9cfc4f39f96abf875fae27561ddf2816a6d03ba2a06ccad6b5e0a29fd51b57e94429ddae33b6
 DIST boto3-1.42.18.gh.tar.gz 1067403 BLAKE2B 9e6011411eeef2a36bd94af01677930a49033312d02221ed94c06f27d8eea063c463d7fc2bee49e6e7e5166a9a57e3308dc63deb58fb47223e773ca7402af9a1 SHA512 1b4ba17130ab69eb057bf4f6ef4c30a52299dcc75853ec0702ff3620989a8c05d618e89da1e332b2ddee48536b47e6ab51e7376d23e8adfb5d82e2acdb60c90b
 DIST boto3-1.42.19.gh.tar.gz 1067744 BLAKE2B ecdb7b493e511e8f8c13520b3b26e1c1dfa14dd9b3a0bfdc242569a03da9a49a64df9b0ba9df0fa31b60a9602d885581626e9a1a90dc5ac522f3343d149fc74b SHA512 cc01aeff747ee9ddc60823964ace06ea47ab51f8344706b8196ee11571ef18bdfd67445a58ee65bd9da819285b7d6301293c3d98536bdd805dc889a11acafd34
+DIST boto3-1.42.21.gh.tar.gz 1068192 BLAKE2B 281cfe3d55f0b094ca7b7e3b192c94736d91ea22dc2de9a1328caf3b3ab01d919be493259cf4da5bcead56ec4505a35a9be2ceed3b1ee5f260551ee6711d0cd9 SHA512 922629f1718a1a900da508528bb91c5bd989bb128d773758425354e2fc5877cd67ae93c5a5044365239eced04cf4dce4700dc64d6c563b62a014965def539429
 DIST boto3-1.42.4.gh.tar.gz 1055570 BLAKE2B a9990bb04ce59111c6371536692c6e4d5440f3f0dc79e1ecc119652603bcd8bc15839400758999faffd7df9bda9efb4991393fcab32baa16c7a0e51ff7c5cc94 SHA512 95950ba80f31c3951a88237ff5edd1367285c3ab263c7f8ad1b7556d610d553dd4e2021fbbcc0d9bdcf578fe34ad9fcf6231511f54ee71917f69c1cdb6adab28
 DIST boto3-1.42.9.gh.tar.gz 1059745 BLAKE2B 78fba4fe807a3ea8eea22cd81cff67c90cd36e281665545bc9d7dc9bfaa1089d668e1994ba6e950eedfe2cfa1495f192b43f8fdae2b9b8b6bd74b62e0ab699d8 SHA512 92ecb0d609ba2f7df6a444b9d840e2a070b22ec38f8ae3bd376e9473e5b4efbefc9bc924046cc6d79576967e33eed270633396171e6102331b58519021435fe8
diff --git a/dev-python/boto3/boto3-1.42.21.ebuild b/dev-python/boto3/boto3-1.42.21.ebuild
new file mode 100644
index 0000000000000..019ca75e6b75a
--- /dev/null
+++ b/dev-python/boto3/boto3-1.42.21.ebuild
@@ -0,0 +1,53 @@
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+DISTUTILS_USE_PEP517=setuptools
+PYTHON_COMPAT=( python3_{11..14} )
+
+inherit distutils-r1
+
+DESCRIPTION="The AWS SDK for Python"
+HOMEPAGE="
+	https://github.com/boto/boto3/
+	https://pypi.org/project/boto3/
+"
+SRC_URI="
+	https://github.com/boto/boto3/archive/${PV}.tar.gz
+		-> ${P}.gh.tar.gz
+"
+
+LICENSE="Apache-2.0"
+SLOT="0"
+KEYWORDS="~amd64 ~arm ~arm64 ~loong ~ppc ~ppc64 ~riscv ~sparc ~x86"
+
+RDEPEND="
+	>=dev-python/botocore-${PV}[${PYTHON_USEDEP}]
+	>=dev-python/jmespath-0.7.1[${PYTHON_USEDEP}]
+	>=dev-python/s3transfer-0.16.0[${PYTHON_USEDEP}]
+"
+
+EPYTEST_PLUGINS=()
+EPYTEST_XDIST=1
+distutils_enable_tests pytest
+
+python_prepare_all() {
+	# don't lock versions to narrow ranges
+	sed -e '/botocore/ d' \
+		-e '/jmespath/ d' \
+		-e '/s3transfer/ d' \
+		-i setup.py || die
+
+	# do not rely on bundled deps in botocore (sic!)
+	find -name '*.py' -exec sed -i \
+		-e 's:from botocore[.]vendored import:import:' \
+		-e 's:from botocore[.]vendored[.]:from :' \
+		{} + || die
+
+	distutils-r1_python_prepare_all
+}
+
+python_test() {
+	epytest tests/{functional,unit}
+}