diff --git a/src/actions/index.ts b/src/actions/index.ts
index f117fa73..24a42d6b 100644
--- a/src/actions/index.ts
+++ b/src/actions/index.ts
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2020 The Pybricks Authors
+
 import { Dispatch as ReduxDispatch } from 'redux';
 import { BLEAction, BLEConnectAction, BLEDataAction } from './ble';
 import { EditorAction } from './editor';
diff --git a/src/sagas/mpy.test.ts b/src/sagas/mpy.test.ts
index 7056509c..64908a6c 100644
--- a/src/sagas/mpy.test.ts
+++ b/src/sagas/mpy.test.ts
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2020 The Pybricks Authors
+
 import { runSaga, stdChannel } from 'redux-saga';
 import { Action } from '../actions';
 import {