diff --git a/src/error.rs b/src/error.rs
index 6aff61b..769d5f9 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: 2025 Joshua Goins <josh@redstrate.com>
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // TODO: expand
 #[derive(Debug, Clone)]
 pub struct Error;