diff --git a/Ohmpi.py b/Ohmpi.py
index a66f5d4328f215c38f26b3359798d9b62bf56941..9c4eb6783d6320baa8472273c8fbf50c45f51429 100644
--- a/Ohmpi.py
+++ b/Ohmpi.py
@@ -1,5 +1,6 @@
 """
 created on January 6, 2020
+Update December 2021
 Ohmpi.py is a program to control a low-cost and open hardward resistivity meter OhmPi that has been developed by Rémi CLEMENT(INRAE),Vivien DUBOIS(INRAE),Hélène GUYARD(IGE), Nicolas FORQUET (INRAE), and Yannick FARGIER (IFSTTAR).
 """
 print('OHMPI start' )