diff --git a/include/gnss_utils.h b/include/gnss_utils.h
index 0c5b6ed4320ee047358ce6f0c56592714b069f7d..4b8ad8be0969c39b6aa92c0cfb649ae04e82ff38 100644
--- a/include/gnss_utils.h
+++ b/include/gnss_utils.h
@@ -1,3 +1,24 @@
+//--------LICENSE_START--------
+//
+// Copyright (C) 2020,2021,2022 Institut de Robòtica i Informàtica Industrial, CSIC-UPC.
+// Authors: Joan Vallvé Navarro (jvallve@iri.upc.edu)
+// All rights reserved.
+//
+// This file is part of gnss_utils
+// gnss_utils is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+//--------LICENSE_END--------
 #ifndef GNSS_UTILS_H
 #define GNSS_UTILS_H