From 6a034670b6656a1730f3b7a2157ef0b6abe1c770 Mon Sep 17 00:00:00 2001
From: gabriel-logan <gabrielcoutolima@protonmail.ch>
Date: Sat, 30 Mar 2024 03:10:26 -0300
Subject: [PATCH] chore: udpate contributing file

---
 CONTRIBUTING.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 448fa83..60b6f95 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -2,6 +2,9 @@
 
 The loganmatic is a mathematics library created for use in JS, TS, JAVA, PYTHON and C# languages. Purely mathematical library, developed for people who like mathematics and challenges.
 
+## Important rule:
+### All methods must be developed without using external libraries!!!
+
 ## How to Contribute
 
 1. **Fork the Repository**