diff --git a/ohmpi.py b/ohmpi.py
index a91b9057a9326980e80def836db9c49852089294..1b5eaa0f71cb27e66b9abf054820409ea589dd56 100644
--- a/ohmpi.py
+++ b/ohmpi.py
@@ -2,6 +2,7 @@
 """
 created on January 6, 2020.
 Updates May 2022, Oct 2022.
+Licensed under CERN-OHL-S v2 or any later version
 Ohmpi.py is a program to control a low-cost and open hardware resistivity meter OhmPi that has been developed by
 Rémi CLEMENT (INRAE), Vivien DUBOIS (INRAE), Hélène GUYARD (IGE), Nicolas FORQUET (INRAE), Yannick FARGIER (IFSTTAR)
 Olivier KAUFMANN (UMONS), Arnaud WATELET (UMONS) and Guillaume BLANCHY (FNRS/ULiege).