diff --git a/drivers/AnalogIn.cpp b/drivers/AnalogIn.cpp
index 86fd7be235..dd9d22f306 100644
--- a/drivers/AnalogIn.cpp
+++ b/drivers/AnalogIn.cpp
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/AnalogIn.h b/drivers/AnalogIn.h
index 287e6a3d7e..711109823e 100644
--- a/drivers/AnalogIn.h
+++ b/drivers/AnalogIn.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/AnalogOut.h b/drivers/AnalogOut.h
index 111e1006bf..285567f064 100644
--- a/drivers/AnalogOut.h
+++ b/drivers/AnalogOut.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/BusIn.cpp b/drivers/BusIn.cpp
index c14351f3fe..7aa557738c 100644
--- a/drivers/BusIn.cpp
+++ b/drivers/BusIn.cpp
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/BusIn.h b/drivers/BusIn.h
index da3f44545f..61bf7b536e 100644
--- a/drivers/BusIn.h
+++ b/drivers/BusIn.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/BusInOut.cpp b/drivers/BusInOut.cpp
index 170e035b96..8039a45040 100644
--- a/drivers/BusInOut.cpp
+++ b/drivers/BusInOut.cpp
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/BusInOut.h b/drivers/BusInOut.h
index 02f62fbf3f..64a4e0e189 100644
--- a/drivers/BusInOut.h
+++ b/drivers/BusInOut.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/BusOut.cpp b/drivers/BusOut.cpp
index 769d2e6891..654040103c 100644
--- a/drivers/BusOut.cpp
+++ b/drivers/BusOut.cpp
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/BusOut.h b/drivers/BusOut.h
index 46e21240a7..ca83d00a17 100644
--- a/drivers/BusOut.h
+++ b/drivers/BusOut.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/CAN.cpp b/drivers/CAN.cpp
index e3a0d42854..a3699e3919 100644
--- a/drivers/CAN.cpp
+++ b/drivers/CAN.cpp
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/CAN.h b/drivers/CAN.h
index d3565ee727..228eb611f0 100644
--- a/drivers/CAN.h
+++ b/drivers/CAN.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/DigitalIn.h b/drivers/DigitalIn.h
index 8eceb07707..348a87bf33 100644
--- a/drivers/DigitalIn.h
+++ b/drivers/DigitalIn.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/DigitalInOut.h b/drivers/DigitalInOut.h
index 88411957df..9ceb025aee 100644
--- a/drivers/DigitalInOut.h
+++ b/drivers/DigitalInOut.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/DigitalOut.h b/drivers/DigitalOut.h
index 8f9059173e..b9fe1f2d3e 100644
--- a/drivers/DigitalOut.h
+++ b/drivers/DigitalOut.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/Ethernet.cpp b/drivers/Ethernet.cpp
index 6b0a2bfab6..b2b73c113c 100644
--- a/drivers/Ethernet.cpp
+++ b/drivers/Ethernet.cpp
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/Ethernet.h b/drivers/Ethernet.h
index a9b7c2c1db..675851dacd 100644
--- a/drivers/Ethernet.h
+++ b/drivers/Ethernet.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/I2C.cpp b/drivers/I2C.cpp
index 2cdcc49d8c..3e06825c17 100644
--- a/drivers/I2C.cpp
+++ b/drivers/I2C.cpp
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2015 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/I2C.h b/drivers/I2C.h
index daca532ef5..d1857b6557 100644
--- a/drivers/I2C.h
+++ b/drivers/I2C.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2015 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/I2CSlave.cpp b/drivers/I2CSlave.cpp
index b29b4e74e2..f0697460be 100644
--- a/drivers/I2CSlave.cpp
+++ b/drivers/I2CSlave.cpp
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/I2CSlave.h b/drivers/I2CSlave.h
index 12d9ce08c7..c07cef138a 100644
--- a/drivers/I2CSlave.h
+++ b/drivers/I2CSlave.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/InterruptIn.cpp b/drivers/InterruptIn.cpp
index 51d947f7a3..a4ab5f0135 100644
--- a/drivers/InterruptIn.cpp
+++ b/drivers/InterruptIn.cpp
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/InterruptIn.h b/drivers/InterruptIn.h
index 85928e3e85..39f68ce1c0 100644
--- a/drivers/InterruptIn.h
+++ b/drivers/InterruptIn.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/InterruptManager.cpp b/drivers/InterruptManager.cpp
index f557cf4378..179731b419 100644
--- a/drivers/InterruptManager.cpp
+++ b/drivers/InterruptManager.cpp
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/InterruptManager.h b/drivers/InterruptManager.h
index 6b3c1d086c..8b207f0c5e 100644
--- a/drivers/InterruptManager.h
+++ b/drivers/InterruptManager.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/LowPowerTicker.h b/drivers/LowPowerTicker.h
index a77307e68b..a6f9fa9401 100644
--- a/drivers/LowPowerTicker.h
+++ b/drivers/LowPowerTicker.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2015 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/LowPowerTimeout.h b/drivers/LowPowerTimeout.h
index 561c4a2201..0b68e8ea75 100644
--- a/drivers/LowPowerTimeout.h
+++ b/drivers/LowPowerTimeout.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2015 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/LowPowerTimer.h b/drivers/LowPowerTimer.h
index 19bb8fdc3e..0b0c1ebaf8 100644
--- a/drivers/LowPowerTimer.h
+++ b/drivers/LowPowerTimer.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2015 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/MbedCRC.cpp b/drivers/MbedCRC.cpp
index 34e777a251..6353e052c3 100644
--- a/drivers/MbedCRC.cpp
+++ b/drivers/MbedCRC.cpp
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/MbedCRC.h b/drivers/MbedCRC.h
index 9c7328bd00..f5ee20a9ec 100644
--- a/drivers/MbedCRC.h
+++ b/drivers/MbedCRC.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/PortIn.h b/drivers/PortIn.h
index fbecc257e0..8545f88efa 100644
--- a/drivers/PortIn.h
+++ b/drivers/PortIn.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/PortInOut.h b/drivers/PortInOut.h
index 00c972c2a0..24eede48c7 100644
--- a/drivers/PortInOut.h
+++ b/drivers/PortInOut.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/PortOut.h b/drivers/PortOut.h
index 8df644e56c..814900cab4 100644
--- a/drivers/PortOut.h
+++ b/drivers/PortOut.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/PwmOut.h b/drivers/PwmOut.h
index 6d6f847f8f..087a1a7f64 100644
--- a/drivers/PwmOut.h
+++ b/drivers/PwmOut.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/QSPI.cpp b/drivers/QSPI.cpp
index 9a75d79727..c79c949e3b 100644
--- a/drivers/QSPI.cpp
+++ b/drivers/QSPI.cpp
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2018 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/QSPI.h b/drivers/QSPI.h
index 764a1167ff..afddf60b80 100644
--- a/drivers/QSPI.h
+++ b/drivers/QSPI.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2018 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/RawSerial.cpp b/drivers/RawSerial.cpp
index 2943bd9520..b473fddae4 100644
--- a/drivers/RawSerial.cpp
+++ b/drivers/RawSerial.cpp
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/RawSerial.h b/drivers/RawSerial.h
index bb06fe4787..909e3eaea7 100644
--- a/drivers/RawSerial.h
+++ b/drivers/RawSerial.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/SPI.cpp b/drivers/SPI.cpp
index d679a9c0a8..8ae1ee2f4e 100644
--- a/drivers/SPI.cpp
+++ b/drivers/SPI.cpp
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/SPI.h b/drivers/SPI.h
index 10efc7d0aa..9ba1360bfc 100644
--- a/drivers/SPI.h
+++ b/drivers/SPI.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2015 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/SPISlave.cpp b/drivers/SPISlave.cpp
index 1f826bb343..db870cdea2 100644
--- a/drivers/SPISlave.cpp
+++ b/drivers/SPISlave.cpp
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/SPISlave.h b/drivers/SPISlave.h
index 6ee9ba6171..8d98d36ce2 100644
--- a/drivers/SPISlave.h
+++ b/drivers/SPISlave.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/Serial.cpp b/drivers/Serial.cpp
index 55e5a38bba..d0f87263b6 100644
--- a/drivers/Serial.cpp
+++ b/drivers/Serial.cpp
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/Serial.h b/drivers/Serial.h
index 1b1e6aa34e..54bdf9cbd3 100644
--- a/drivers/Serial.h
+++ b/drivers/Serial.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/SerialBase.cpp b/drivers/SerialBase.cpp
index c4333d9f97..6557a93e65 100644
--- a/drivers/SerialBase.cpp
+++ b/drivers/SerialBase.cpp
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/SerialBase.h b/drivers/SerialBase.h
index a78d7d0088..c945202b4c 100644
--- a/drivers/SerialBase.h
+++ b/drivers/SerialBase.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/SerialWireOutput.h b/drivers/SerialWireOutput.h
index 1e90ebc17c..0379687c9b 100644
--- a/drivers/SerialWireOutput.h
+++ b/drivers/SerialWireOutput.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2017 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/TableCRC.cpp b/drivers/TableCRC.cpp
index b6e55aaae8..b0d316e471 100644
--- a/drivers/TableCRC.cpp
+++ b/drivers/TableCRC.cpp
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/TableCRC.h b/drivers/TableCRC.h
index 478bb25958..1ab5bf8365 100644
--- a/drivers/TableCRC.h
+++ b/drivers/TableCRC.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2017 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/Ticker.cpp b/drivers/Ticker.cpp
index efa3efb9c0..feb27ef57b 100644
--- a/drivers/Ticker.cpp
+++ b/drivers/Ticker.cpp
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/Ticker.h b/drivers/Ticker.h
index 059d6a1792..31ce72cfad 100644
--- a/drivers/Ticker.h
+++ b/drivers/Ticker.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/Timeout.cpp b/drivers/Timeout.cpp
index 159cc0d4b4..42141c4c48 100644
--- a/drivers/Timeout.cpp
+++ b/drivers/Timeout.cpp
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/Timeout.h b/drivers/Timeout.h
index f39dcc03d1..c155c9bcec 100644
--- a/drivers/Timeout.h
+++ b/drivers/Timeout.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/Timer.cpp b/drivers/Timer.cpp
index 5a6d7df9e4..b13f86ce90 100644
--- a/drivers/Timer.cpp
+++ b/drivers/Timer.cpp
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/Timer.h b/drivers/Timer.h
index 9cc3586d98..010f6019b5 100644
--- a/drivers/Timer.h
+++ b/drivers/Timer.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/TimerEvent.cpp b/drivers/TimerEvent.cpp
index 9c5174dc72..9c77eb86f5 100644
--- a/drivers/TimerEvent.cpp
+++ b/drivers/TimerEvent.cpp
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/TimerEvent.h b/drivers/TimerEvent.h
index 87e2481cf2..88f4c3b750 100644
--- a/drivers/TimerEvent.h
+++ b/drivers/TimerEvent.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2013 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/UARTSerial.cpp b/drivers/UARTSerial.cpp
index 845f0a19e8..2f317b5310 100644
--- a/drivers/UARTSerial.cpp
+++ b/drivers/UARTSerial.cpp
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2017 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/drivers/UARTSerial.h b/drivers/UARTSerial.h
index 792d3e0f36..2a47da1a38 100644
--- a/drivers/UARTSerial.h
+++ b/drivers/UARTSerial.h
@@ -1,5 +1,6 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2006-2017 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.