diff --git a/README.md b/README.md
index 3b63582e8e..b7f12c457a 100644
--- a/README.md
+++ b/README.md
@@ -973,6 +973,7 @@ A curated list of awesome Python frameworks, libraries and software. Inspired by
 * [funcy](https://github.com/Suor/funcy) - A fancy and practical functional tools.
 * [Toolz](https://github.com/pytoolz/toolz) - A collection of functional utilities for iterators, functions, and dictionaries.
 * [CyToolz](https://github.com/pytoolz/cytoolz/) - Cython implementation of Toolz: High performance functional utilities.
+* [highlander](https://github.com/chriscannon/highlander) - A Python decorator that helps ensure that a Python Process is running only once.
 
 ## Third-party APIs