diff --git a/bit_manipulation/convert_to_hex.py b/bit_manipulation/convert_to_hex.py
index 84b4de6..0b25aec 100644
--- a/bit_manipulation/convert_to_hex.py
+++ b/bit_manipulation/convert_to_hex.py
@@ -1,3 +1,8 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+# author: bt3gl
+
+
 def convert_to_hex(num: int) -> str:
       
   hex_chars  = "0123456789abcdef"