diff --git a/README.md b/README.md
index e4b1e0a..e034bf3 100644
--- a/README.md
+++ b/README.md
@@ -304,6 +304,7 @@ Please take a quick gander at the [contribution guidelines](https://github.com/a
 * [goweek](https://github.com/grsmv/goweek) - Library for working with week entity in golang.
 * [now](https://github.com/jinzhu/now) - Now is a time toolkit for golang.
 * [timeutil](https://github.com/leekchan/timeutil) - Useful extensions (Timedelta, Strftime, ...) to the golang's time package.
+* [go-persian-calendar](https://github.com/yaa110/go-persian-calendar) - The implementation of the Persian (Solar Hijri) Calendar in Go (golang).
 
 
 ## Distributed Systems