diff --git a/README.md b/README.md
index 09e153e..39ccff5 100644
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+++ b/README.md
@@ -231,6 +231,8 @@ See also [http://areweideyet.com/](http://areweideyet.com/) and [Rust and IDEs](
 
 * [aturon/crossbeam](https://github.com/aturon/crossbeam) – Support for parallelism and low-level concurrency in Rust [<img src="https://travis-ci.org/aturon/crossbeam.svg?branch=master">](https://travis-ci.org/aturon/crossbeam)
 * [nikomatsakis/rayon](https://github.com/nikomatsakis/rayon) – A data parallelism library for Rust [<img src="https://travis-ci.org/nikomatsakis/rayon.svg?branch=master">](https://travis-ci.org/nikomatsakis/rayon)
+* [zonyitoo/coio-rs](https://github.com/zonyitoo/coio-rs) – Coroutine I/O for Rust [<img src="https://travis-ci.org/zonyitoo/coio-rs.svg?branch=master">](https://travis-ci.org/zonyitoo/coio-rs)
+* [rustcc/coroutine-rs](https://github.com/rustcc/coroutine-rs) – Coroutine Library in Rust [<img src="https://img.shields.io/travis/rustcc/coroutine-rs.svg">](https://travis-ci.org/rustcc/coroutine-rs)
 
 ### Cloud