diff --git a/2021.md b/2021.md
index cbe0b136..b78a478a 100644
--- a/2021.md
+++ b/2021.md
@@ -623,7 +623,7 @@ of Code] event.
 * [smetanin-av/advent-of-code](https://github.com/smetanin-av/advent-of-code) ![Last Commit on GitHub](https://img.shields.io/badge/last%20commit-2022--12--31-brightgreen)
 * [taddeus/advent-of-code](https://github.com/taddeus/advent-of-code) ![Last Commit on GitHub](https://img.shields.io/badge/last%20commit-2025--12--09-brightgreen)
 * [twobiers/AoC-2021](https://github.com/twobiers/AoC-2021) ![Last Commit on GitHub](https://img.shields.io/badge/last%20commit-2021--12--15-brightgreen)
-* [vil02/adv_2021](https://github.com/vil02/adv_2021) ![Last Commit on GitHub](https://img.shields.io/badge/last%20commit-2025--12--12-brightgreen)
+* [vil02/adv_2021](https://github.com/vil02/adv_2021) ![Last Commit on GitHub](https://img.shields.io/badge/last%20commit-2025--12--21-brightgreen)
 * [viliampucik/adventofcode](https://github.com/viliampucik/adventofcode) ![Last Commit on GitHub](https://img.shields.io/badge/last%20commit-2024--12--16-brightgreen)
 * [vlopezferrando/advent-of-code](https://github.com/vlopezferrando/advent-of-code) ![Last Commit on GitHub](https://img.shields.io/badge/last%20commit-2023--12--04-brightgreen)
 * [w-m/aoc](https://github.com/w-m/aoc) ![Last Commit on GitHub](https://img.shields.io/badge/last%20commit-2024--12--12-brightgreen)