diff --git a/Cargo.toml b/Cargo.toml
index 7e1d8cd2afc7446cda9d2005df4555ae521e3949..84e2a1232e989e351f0cc2c97de8dbd1623e6807 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2023 Nicolas Fontrodona
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
 [package]
 name = "gblk"
 version = "0.1.0"