diff --git a/dev-erlang/cowlib/Manifest b/dev-erlang/cowlib/Manifest
new file mode 100644
index 0000000000..bb00dd6ea4
--- /dev/null
+++ b/dev-erlang/cowlib/Manifest
@@ -0,0 +1 @@
+DIST cowlib-2.10.1.tar.gz 206810 BLAKE2B fc8d6358af806453a417dcbe2f00025c2302b0fcb57e70752aff70defc9d5ca37d5ab675335c58bb7b7dea11ba0beb1a90df23d541707503e795038bd3784dfe SHA512 631b6bc467219da91bbfd7c8c4c935127615f784126d67a168a9e7b43c5ae4943ae432c8f101abae1928577b4273a2b4cd3181338cbf7a588d91aff4c70df323
diff --git a/dev-erlang/cowlib/cowlib-2.10.1.ebuild b/dev-erlang/cowlib/cowlib-2.10.1.ebuild
new file mode 100644
index 0000000000..b705b02193
--- /dev/null
+++ b/dev-erlang/cowlib/cowlib-2.10.1.ebuild
@@ -0,0 +1,27 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+inherit rebar
+
+DESCRIPTION="Support library for manipulating Web protocols."
+HOMEPAGE="https://github.com/ninenines/cowlib"
+SRC_URI="https://github.com/ninenines/${PN}/archive/${PV}.tar.gz
+	-> ${P}.tar.gz"
+
+LICENSE="ISC"
+SLOT="0"
+KEYWORDS="~amd64"
+
+DOCS=( README.asciidoc )
+
+# TODO: cowlib has a test suite with lots of dependencies; enable it once those
+# dependencies are merged as well
+RESTRICT=test
+
+# Override with EAPI default because it's missing cowlib.app.src and doesn't
+# have any deps.
+src_prepare() {
+	default
+}
diff --git a/dev-erlang/cowlib/metadata.xml b/dev-erlang/cowlib/metadata.xml
new file mode 100644
index 0000000000..708e073d17
--- /dev/null
+++ b/dev-erlang/cowlib/metadata.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM 'http://www.gentoo.org/dtd/metadata.dtd'>
+<pkgmetadata>
+	<maintainer type="person">
+		<email>brian@kubisiak.com</email>
+		<name>Brian Kubisiak</name>
+	</maintainer>
+</pkgmetadata>