diff --git a/README.md b/README.md
index 8813212..12f3f05 100644
--- a/README.md
+++ b/README.md
@@ -1277,6 +1277,7 @@ See also [About Rust’s Machine Learning Community](https://medium.com/@autumn_
 
 [[date](https://crates.io/keywords/date), [time](https://crates.io/keywords/time)]
 
+* [arthurhenrique/rusti-cal](https://github.com/arthurhenrique/rusti-cal) [[CRATE](https://crates.io/crates/rusti-cal)] - A cal(1) clone lightning-fast ~ more than 9999 years ~ Written in Rust
 * [chronotope/chrono](https://github.com/chronotope/chrono) - Date and time library
 * [Mnwa/ms](https://github.com/Mnwa/ms) [[ms-converter](https://crates.io/crates/ms-converter)] - it's a library for converting human-like times to milliseconds [![build badge](https://github.com/Mnwa/ms/workflows/build/badge.svg?branch=master)](https://github.com/Mnwa/ms/actions?query=workflow%3Abuild)
 * [sorairolake/nt-time](https://gitlab.com/sorairolake/nt-time) [[nt-time](https://crates.io/crates/nt-time)] - A Windows file time library. [![CI](https://gitlab.com/sorairolake/nt-time/workflows/CI/badge.svg?branch=develop)](https://gitlab.com/sorairolake/nt-time/actions?query=workflow%3ACI)