diff --git a/README.md b/README.md
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+++ b/README.md
@@ -782,6 +782,7 @@ See also [About Rust’s Machine Learning Community](https://medium.com/@autumn_
 * Argument parsing
   * [clap-rs](https://github.com/clap-rs/clap) [[clap](https://crates.io/crates/clap)] — A simple to use, full featured command-line argument parser [<img src="https://api.travis-ci.org/clap-rs/clap.svg?branch=master">](https://travis-ci.org/clap-rs/clap)
   * [docopt/docopt.rs](https://github.com/docopt/docopt.rs) [[docopt](https://crates.io/crates/docopt)] — A Rust implementation of [DocOpt](http://docopt.org) [<img src="https://api.travis-ci.org/docopt/docopt.rs.svg?branch=master">](https://travis-ci.org/docopt/docopt.rs)
+  * [z5labs/pflag](https://github.com/z5labs/pflag) [[pflag](https://crates.io/crates/pflag)] — A port of @spf13's amazing POSIX compliant arg parsing library in Go. [![Build Status](https://github.com/z5labs/pflag/workflows/Rust/badge.svg?branch=master)](https://github.com/z5labs/pflag/actions)
   * [TeXitoi/structopt](https://github.com/TeXitoi/structopt) [[structopt](https://crates.io/crates/structopt)] — parse command line argument by defining a struct [<img src="https://api.travis-ci.org/TeXitoi/structopt.svg?branch=master">](https://travis-ci.org/TeXitoi/structopt)
   * [killercup/quicli](https://github.com/killercup/quicli) [[quicli](https://crates.io/crates/quicli)] — quickly build cool CLI apps in Rust [<img src="https://api.travis-ci.org/killercup/quicli.svg?branch=master">](https://travis-ci.org/killercup/quicli)
   * [ksk001100/seahorse](https://github.com/ksk001100/seahorse) [[seahorse](https://crates.io/crates/seahorse)] — A minimal CLI framework written in Rust [![Build status](https://github.com/ksk001100/seahorse/workflows/CI/badge.svg?branch=master)](https://github.com/ksk001100/seahorse/actions)