diff --git a/2021.md b/2021.md
index a1481060..0477796a 100644
--- a/2021.md
+++ b/2021.md
@@ -621,6 +621,7 @@ Read [CONTRIBUTING.md](/.github/CONTRIBUTING.md) to learn how to add your own re
 * [yspreen/adventofcode](https://github.com/yspreen/adventofcode) ![Last Commit on GitHub](https://img.shields.io/badge/last%20commit-2022--01--09-brightgreen)
 * [zedrdave/advent_of_code](https://github.com/zedrdave/advent_of_code) ![Last Commit on GitHub](https://img.shields.io/badge/last%20commit-2021--12--23-brightgreen)
 * [TurtleSmoke/Advent-of-Code](https://github.com/TurtleSmoke/Advent-of-Code)
+* [vil02/adv_2021](https://github.com/vil02/adv_2021)
 
 #### R