diff --git a/README.md b/README.md
index 871032d..c0fb546 100644
--- a/README.md
+++ b/README.md
@@ -647,6 +647,7 @@ A curated list of awesome C++ (or C) frameworks, libraries, resources, and shiny
 * [simdjson](https://github.com/lemire/simdjson) - Extremely fast JSON library that can parse gigabytes of JSON per second. [Apache-2.0]
 * [taoJSON](https://github.com/taocpp/json) - Zero-dependency C++ header-only JSON library. [MIT]
 * [ujson](https://bitbucket.org/awangk/ujson) - µjson is a a small, C++11, UTF-8, JSON library. [MIT]
+* [UltraJSON](https://github.com/ultrajson/ultrajson) - Ultra fast JSON decoder and encoder written in C. [BSD-3-Clause]
 * [YAJL](https://github.com/lloyd/yajl) - A fast streaming JSON parsing library in C. [ISC]
 * [yyjson](https://github.com/ibireme/yyjson) - A high performance JSON library written in ANSI C. [MIT]