diff --git a/deps/nostalgia/src/olympic/studio/modlib/include/studio/selectiontracker.hpp b/deps/nostalgia/src/olympic/studio/modlib/include/studio/selectiontracker.hpp
index 776b6b9..e77d0ab 100644
--- a/deps/nostalgia/src/olympic/studio/modlib/include/studio/selectiontracker.hpp
+++ b/deps/nostalgia/src/olympic/studio/modlib/include/studio/selectiontracker.hpp
@@ -1,3 +1,6 @@
+/*
+ * Copyright 2016 - 2024 Gary Talent (gary@drinkingtea.net). All rights reserved.
+ */
 
 #pragma once
 
diff --git a/deps/nostalgia/src/olympic/studio/modlib/src/undocommand.cpp b/deps/nostalgia/src/olympic/studio/modlib/src/undocommand.cpp
index 96dec70..2f60ad1 100644
--- a/deps/nostalgia/src/olympic/studio/modlib/src/undocommand.cpp
+++ b/deps/nostalgia/src/olympic/studio/modlib/src/undocommand.cpp
@@ -1,3 +1,6 @@
+/*
+ * Copyright 2016 - 2024 Gary Talent (gary@drinkingtea.net). All rights reserved.
+ */
 
 #include <studio/undocommand.hpp>
 
diff --git a/deps/nostalgia/src/olympic/turbine/src/turbine.cpp b/deps/nostalgia/src/olympic/turbine/src/turbine.cpp
index 3c56b7c..7488751 100644
--- a/deps/nostalgia/src/olympic/turbine/src/turbine.cpp
+++ b/deps/nostalgia/src/olympic/turbine/src/turbine.cpp
@@ -1,3 +1,6 @@
+/*
+ * Copyright 2016 - 2024 Gary Talent (gary@drinkingtea.net). All rights reserved.
+ */
 
 #include <keel/keel.hpp>