diff --git a/dev-python/boto3/Manifest b/dev-python/boto3/Manifest
index be68c2759aa34..e41253d3f7e28 100644
--- a/dev-python/boto3/Manifest
+++ b/dev-python/boto3/Manifest
@@ -2,3 +2,4 @@ DIST boto3-1.39.14.gh.tar.gz 974493 BLAKE2B 14c6295f20cab6390c81d399585c9bd82911
 DIST boto3-1.39.9.gh.tar.gz 971951 BLAKE2B d77a87e3035a2797ff67d49c3df329836c51b305c72f8ce01445b668802aa1a529424e744ddd18e142cd35a0680be51383b56512dca115506a1a0f4860657b47 SHA512 c6df821d3558ca1d234a4a1dea231467c0935dff7c34e6eb01b067d4d2396024308f70218a621064b111359bc5197b191bc8f4a099bcfcc5f4d5bf174ba859b0
 DIST boto3-1.40.1.gh.tar.gz 978197 BLAKE2B c93f3550d41c13292dd8f4dcaab9d896faca127684a3ca72c253aa42ac44277c27ff0d68f47754c408701e97f0cefeda81e94565fba808544d5c16efaabb00d9 SHA512 c94eb4584161932f2d03ca9bf402a6e55358124e48fea94b71a5e22774aac6312f8ba7c69a18824c306b16a494cb3ed613cb96244c2718adbd53dd3b5829f934
 DIST boto3-1.40.2.gh.tar.gz 978635 BLAKE2B 0bdcea2a77084d40591ed7974145491dda55b2cf6d3979d6df951992161356e35ad51e92cf74a02609c0f0892ed546df541e3dd1fb867140c0f0e0c8c6e6182f SHA512 9f238ceafa569a2607fb72bd3c4d05c83493b81b1ed36b76136efa6df464e67e90643082307f026d72d6f9a78ddb4486a01859609b980e7c6a22da2b7b0e1465
+DIST boto3-1.40.3.gh.tar.gz 979059 BLAKE2B 3c357e5b59dfa3444d7d737b34a482d8e15e36ff98dad1d24ea95412474bf9765958bb7e7726c6b83a10147ac8e8c1bc9d8fada6e8211c9c0d6efa1c0bc48d7d SHA512 562ee9f1c0ddb0f5f076fab448efe0cdc24354bdea5b0ca8600e657d449df442dd477215ad47c6d17a40c0ad4b149adab17fe02ef483a709e04e30062cb24a9b
diff --git a/dev-python/boto3/boto3-1.40.3.ebuild b/dev-python/boto3/boto3-1.40.3.ebuild
new file mode 100644
index 0000000000000..bd6e26787db4f
--- /dev/null
+++ b/dev-python/boto3/boto3-1.40.3.ebuild
@@ -0,0 +1,53 @@
+# 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..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
+		-> ${P}.gh.tar.gz
+"
+
+LICENSE="Apache-2.0"
+SLOT="0"
+KEYWORDS="~amd64 ~arm ~arm64 ~loong ~ppc ~ppc64 ~riscv ~sparc ~x86 ~amd64-linux ~x86-linux"
+
+RDEPEND="
+	>=dev-python/botocore-${PV}[${PYTHON_USEDEP}]
+	>=dev-python/jmespath-0.7.1[${PYTHON_USEDEP}]
+	>=dev-python/s3transfer-0.13.0[${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}
+}