diff --git a/Ohmpi.py b/Ohmpi.py
index 12768e7d4df051a7e185ad0fe3c6b919a30e482d..84598a934e038e13308a8913fbcaa56e107487ea 100644
--- a/Ohmpi.py
+++ b/Ohmpi.py
@@ -1,4 +1,5 @@
 """
+Ohmpi 1.5 (new multiplexer)
 created on January 6, 2020
 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).
 """