diff --git a/dev-ruby/llhttp-ffi/Manifest b/dev-ruby/llhttp-ffi/Manifest
new file mode 100644
index 0000000000000..edd8ef0da00a1
--- /dev/null
+++ b/dev-ruby/llhttp-ffi/Manifest
@@ -0,0 +1 @@
+DIST llhttp-0.4.0.tar.gz 98406 BLAKE2B 9f7358d988ed00558a36ae80e3c7d38cabb41a2233f32f4e3e6e9ed49a205f85ed84cb76cb07984f3b73b0a67eade4844ed5f4ee98b2453fa5c25d36fcb0082c SHA512 56a491763500b1619492173a83a227e3228847f4b85b8dadab1a9de34d65d5c662615c18d6cc6d5e11226df83381fd7f79f67e12f89f0e437ada8f9fd083ec26
diff --git a/dev-ruby/llhttp-ffi/llhttp-ffi-0.4.0.ebuild b/dev-ruby/llhttp-ffi/llhttp-ffi-0.4.0.ebuild
new file mode 100644
index 0000000000000..b22be2e05156f
--- /dev/null
+++ b/dev-ruby/llhttp-ffi/llhttp-ffi-0.4.0.ebuild
@@ -0,0 +1,40 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+USE_RUBY="ruby26 ruby27 ruby30 ruby31"
+RUBY_FAKEGEM_EXTRADOC="CHANGELOG.md README.md"
+RUBY_FAKEGEM_GEMSPEC="${PN}.gemspec"
+
+inherit ruby-fakegem
+
+DESCRIPTION="Ruby FFI bindings for llhttp"
+HOMEPAGE="https://github.com/metabahn/llhttp"
+MY_PV="2021-09-09"
+SRC_URI="https://github.com/metabahn/llhttp/archive/refs/tags/${MY_PV}.tar.gz -> llhttp-${PV}.tar.gz"
+
+LICENSE="MPL-2.0"
+SLOT="$(ver_cut 1)/$(ver_cut 1-2)"
+KEYWORDS="~amd64 ~sparc"
+IUSE=""
+RUBY_S="llhttp-${MY_PV}/ffi"
+
+ruby_add_rdepend "=dev-ruby/ffi-compiler-1*"
+
+ruby_add_bdepend "test? ( dev-ruby/async-io )"
+
+all_ruby_prepare() {
+	sed -i -e 's/gem "rake-compiler"//g' "Gemfile" || die
+}
+
+each_ruby_compile() {
+	cd ext && "${RUBY}" -S rake || die
+	local FFI_PLATFORM_NAME="$(${RUBY} --disable=did_you_mean -e "require 'ffi' ; p \"#{FFI::Platform::ARCH}-#{FFI::Platform::OS}\"" | tr -d "\"")"
+	install -D "${FFI_PLATFORM_NAME}/libllhttp-ext.so" "../lib/${FFI_PLATFORM_NAME}/libllhttp-ext.so" || die
+}
+
+each_ruby_install() {
+	each_fakegem_install
+	ruby_fakegem_extensions_installed
+}
diff --git a/dev-ruby/llhttp-ffi/metadata.xml b/dev-ruby/llhttp-ffi/metadata.xml
new file mode 100644
index 0000000000000..0b975f88294a6
--- /dev/null
+++ b/dev-ruby/llhttp-ffi/metadata.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+  <maintainer type="project">
+    <email>ruby@gentoo.org</email>
+    <name>Gentoo Ruby Project</name>
+  </maintainer>
+  <upstream>
+    <remote-id type="github">metabahn/llhttp</remote-id>
+  </upstream>
+</pkgmetadata>