diff --git a/dev-python/fastapi/Manifest b/dev-python/fastapi/Manifest
index ba740cdbd1bdb..64717a66458d6 100644
--- a/dev-python/fastapi/Manifest
+++ b/dev-python/fastapi/Manifest
@@ -1,4 +1,5 @@
 DIST fastapi-0.139.0.tar.gz 423016 BLAKE2B 6494df7a9588a52a367f1fa5eef806aef0da218aabbf129dc7cacc81a71a8301e8c2b9cbcb161aa7dccdea86742e21bd644df51a2013db0c1ca04d32b46d030c SHA512 6c55932edd526242ebdcb075635be4e50f91bbe4d4b61a7109e7a751cb665ebbb5fa9f36741106a2bb8a679845c25e3efd9400f4b2f700245f9de5e714301fa9
 DIST fastapi-0.139.2.tar.gz 423428 BLAKE2B 9f65ca68699b822c70b45f1ddff5e538bcd7a470911481b9475af3b052cf5a90bc9f1f6d0cc799d14007d2e11b830dc932ff283645f4afac7086cf3db3486cb7 SHA512 aae0e28df3327a0e18d776cebe6677323cef568f46dc69de86a107e9a966d64a807d3f6a7dd5d639950d903b3d0b41907909256773baf9b75d0ed1ff4371d60a
 DIST fastapi-0.140.0.tar.gz 420968 BLAKE2B 525e71b31a97bfdd627bd224fb12e9b7e7af0ddf1e194f609923b259946462c2246a9ad922c89f99bcf4019edeeb8ca1dfa6d2f5e1dedd0adeb046977df79384 SHA512 1799782278e9c5ce884e256121128cd07bbb48a9bd081b9c8c8c9813adba04f50a6737320cd74a21cd7e7f1c2ee379841e069c0aaba42f7e52e782ce97826699
+DIST fastapi-0.140.13.tar.gz 424843 BLAKE2B 31fcee62b02b22ec120535a3af0c53c9030451145425d07b55175c7f16c876d8f0f1a184dd2e905433dcfeacaf7b0efd9cb83ddb179cb9fc79a9ea0a2b49c25f SHA512 4fcf8cb0cebab3d266451c1d7ec41f70614d7bee5bb471307e88cf3e3104e030271afb40cd3b978600a2fae7768b78f4079e6f7b2c747fc89f77e77040e8197a
 DIST fastapi-0.140.7.tar.gz 422051 BLAKE2B 6e2bdfb7274cfdbd3f0590f7a7ce61d09c4b885ca30ddd4e029cfff489b2844b90bc61b497371d03513051bfd5b050513bd5a75ca36ef93d2a265c87bff423e9 SHA512 faa57243d870c91b02537ef88b9a454f590140c3b8f06a1e5d8070f4cf23b04f72cee7097898ee3820ac9a594905fbdcca4693373b3d0c99010610742d1861de
diff --git a/dev-python/fastapi/fastapi-0.140.13.ebuild b/dev-python/fastapi/fastapi-0.140.13.ebuild
new file mode 100644
index 0000000000000..1bac3394aa493
--- /dev/null
+++ b/dev-python/fastapi/fastapi-0.140.13.ebuild
@@ -0,0 +1,104 @@
+# Copyright 2025-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+DISTUTILS_USE_PEP517=pdm-backend
+PYTHON_COMPAT=( python3_{14..15} )
+#may be not stricly required
+PYTHON_REQ_USE="threads(+)"
+
+inherit distutils-r1 optfeature pypi
+
+DESCRIPTION="High performance framework, easy to learn, fast to code, ready for production"
+HOMEPAGE="
+	https://fastapi.tiangolo.com/
+	https://github.com/fastapi/fastapi/
+	https://pypi.org/project/fastapi/
+"
+
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS="~amd64"
+
+RDEPEND="
+	>=dev-python/annotated-doc-0.0.4[${PYTHON_USEDEP}]
+	>=dev-python/starlette-0.46.0[${PYTHON_USEDEP}]
+	>=dev-python/pydantic-2.9.0[${PYTHON_USEDEP}]
+	>=dev-python/typing-extensions-4.8.0[${PYTHON_USEDEP}]
+	>=dev-python/typing-inspection-0.4.2[${PYTHON_USEDEP}]
+"
+
+#FIXME: add missing deps
+BDEPEND="
+	test? (
+		dev-python/a2wsgi[${PYTHON_USEDEP}]
+		dev-python/dirty-equals[${PYTHON_USEDEP}]
+		dev-python/flask[${PYTHON_USEDEP}]
+		dev-python/httpx[${PYTHON_USEDEP}]
+		dev-python/httpx2[${PYTHON_USEDEP}]
+		dev-python/pydantic-settings[${PYTHON_USEDEP}]
+		dev-python/python-multipart[${PYTHON_USEDEP}]
+		dev-python/sqlalchemy[${PYTHON_USEDEP}]
+		dev-python/typer[${PYTHON_USEDEP}]
+	)
+"
+
+EPYTEST_PLUGINS=( anyio inline-snapshot pytest-timeout )
+# 3k tests+, so use xdist to speed them up
+EPYTEST_XDIST=1
+distutils_enable_tests pytest
+
+# There are some JSON response tests that will exercise orjson or ujson if they are available.
+# These are properly skipped if the optional dependencies are not installed at the cost of a little spam.
+python_test() {
+	local EPYTEST_IGNORE=(
+		# python/strawberry-graphql (in guru, test dep only)
+		tests/test_tutorial/test_graphql/test_tutorial001.py
+		# dev-python/sqlmodel (in guru, test dep only)
+		tests/test_tutorial/test_sql_databases/test_tutorial001.py
+		tests/test_tutorial/test_sql_databases/test_tutorial002.py
+		# dev-python/fastapi-cli (missing, test and optfeature)
+		tests/test_fastapi_cli.py
+		# dev-python/pwdlib (in guru, test dep only)
+		tests/test_tutorial/test_security/test_tutorial004.py
+		tests/test_tutorial/test_security/test_tutorial005.py
+		# Wants dev-python/multipart _just_ to complain that it's not the right multipart lib.
+		tests/test_multipart_installation.py
+		# scripts/tests use CliRunner.isolated_filesystem() removed in recent typer
+		scripts/tests
+	)
+	local EPYTEST_DESELECT=(
+		# Requires investigation - missing ./image.png test file (?)
+		tests/test_tutorial/test_additional_responses/test_tutorial004.py::test_path_operation_img
+
+		# Broken by brotli being available, also fragile to random ordering
+		tests/test_tutorial/test_header_param_models/test_tutorial001.py::test_header_param_model_invalid
+		tests/test_tutorial/test_header_param_models/test_tutorial003.py::test_header_param_model_invalid
+		tests/test_tutorial/test_header_param_models/test_tutorial003.py::test_header_param_model_no_underscore
+	)
+	epytest
+}
+
+pkg_postinst() {
+	# not part of any upstream extra
+	optfeature "alternative JSON library" "dev-python/ujson" # orjson, too but it's deprecated
+
+	# pyproject.toml:project.optional-dependencies.standard
+	# Following optfeatures should be exposed, but missing deps
+	#	optfeature "fastAPI CLI" "dev-python/fastapi-cli" - missing - depends on this package!
+	#	optfeature "compressed file support" "dev-python/fastar" - missing
+	#	optfeature "pydantic extra types support" "dev-python/pydantic-extra-types" - in guru
+	optfeature_header "standard extras"
+	optfeature "ASGI server support" "dev-python/uvicorn"
+	optfeature "email validation support" "dev-python/email-validator"
+	optfeature "TestClient for testing FastAPI applications" "dev-python/httpx"
+	optfeature "templating support" "dev-python/jinja2"
+	optfeature "multipart form data support" "dev-python/python-multipart"
+	optfeature "settings management support" "dev-python/pydantic-settings"
+
+	# pyproject.toml:project.optional-dependencies.all - includes all the above plus:
+	optfeature_header "all extras"
+	optfeature "session middleware support" "dev-python/itsdangerous"
+	optfeature "YAML support" "dev-python/pyyaml"
+}