diff --git a/monitor/build_src/templates/t_transformations.rs b/monitor/build_src/templates/t_transformations.rs
index 1ae4338..bc8709d 100644
--- a/monitor/build_src/templates/t_transformations.rs
+++ b/monitor/build_src/templates/t_transformations.rs
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: 2023 German Aerospace Center (DLR)
+// SPDX-License-Identifier: Apache-2.0
+
 use super::sink_error::SinkErr;
 use rtlola_interpreter::{monitor::Change, rtlola_mir::Type, Value};