diff --git a/src/timeline/DelegateChooser.cpp b/src/timeline/DelegateChooser.cpp
index 8598fa77..39c8fa17 100644
--- a/src/timeline/DelegateChooser.cpp
+++ b/src/timeline/DelegateChooser.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Nheko Contributors
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#include "DelegateChooser.h"
#include "Logging.h"
diff --git a/src/timeline/DelegateChooser.h b/src/timeline/DelegateChooser.h
index 2524b068..22e423a2 100644
--- a/src/timeline/DelegateChooser.h
+++ b/src/timeline/DelegateChooser.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Nheko Contributors
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
// A DelegateChooser like the one, that was added to Qt5.12 (in labs), but compatible with older Qt
// versions see KDE/kquickitemviews see qtdeclarative/qqmldelagatecomponent
diff --git a/src/timeline/EventStore.cpp b/src/timeline/EventStore.cpp
index 94d43a83..6104ad00 100644
--- a/src/timeline/EventStore.cpp
+++ b/src/timeline/EventStore.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Nheko Contributors
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#include "EventStore.h"
#include <QThread>
diff --git a/src/timeline/EventStore.h b/src/timeline/EventStore.h
index ced7bdc0..a10c2126 100644
--- a/src/timeline/EventStore.h
+++ b/src/timeline/EventStore.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Nheko Contributors
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#pragma once
#include <limits>
diff --git a/src/timeline/InputBar.cpp b/src/timeline/InputBar.cpp
index b1580f97..490fccc3 100644
--- a/src/timeline/InputBar.cpp
+++ b/src/timeline/InputBar.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Nheko Contributors
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#include "InputBar.h"
#include <QClipboard>
diff --git a/src/timeline/InputBar.h b/src/timeline/InputBar.h
index 4cb6da7b..5af46b0d 100644
--- a/src/timeline/InputBar.h
+++ b/src/timeline/InputBar.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Nheko Contributors
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#pragma once
#include <QObject>
diff --git a/src/timeline/Reaction.cpp b/src/timeline/Reaction.cpp
index 343c4649..963e04d6 100644
--- a/src/timeline/Reaction.cpp
+++ b/src/timeline/Reaction.cpp
@@ -1 +1,5 @@
+// SPDX-FileCopyrightText: 2021 Nheko Contributors
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#include "Reaction.h"
diff --git a/src/timeline/Reaction.h b/src/timeline/Reaction.h
index 5f122e0a..47dac617 100644
--- a/src/timeline/Reaction.h
+++ b/src/timeline/Reaction.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Nheko Contributors
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#pragma once
#include <QObject>
diff --git a/src/timeline/TimelineModel.cpp b/src/timeline/TimelineModel.cpp
index 3b1bbd6c..7afc75f7 100644
--- a/src/timeline/TimelineModel.cpp
+++ b/src/timeline/TimelineModel.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Nheko Contributors
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#include "TimelineModel.h"
#include <algorithm>
diff --git a/src/timeline/TimelineModel.h b/src/timeline/TimelineModel.h
index e02539bb..06da95c6 100644
--- a/src/timeline/TimelineModel.h
+++ b/src/timeline/TimelineModel.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Nheko Contributors
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#pragma once
#include <QAbstractListModel>
diff --git a/src/timeline/TimelineViewManager.cpp b/src/timeline/TimelineViewManager.cpp
index f2e6d571..74427855 100644
--- a/src/timeline/TimelineViewManager.cpp
+++ b/src/timeline/TimelineViewManager.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Nheko Contributors
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#include "TimelineViewManager.h"
#include <QDesktopServices>
diff --git a/src/timeline/TimelineViewManager.h b/src/timeline/TimelineViewManager.h
index 61fce574..097fccfc 100644
--- a/src/timeline/TimelineViewManager.h
+++ b/src/timeline/TimelineViewManager.h
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2021 Nheko Contributors
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
#pragma once
#include <QHash>
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