diff --git a/README.md b/README.md
index b815634e70..baa795d29f 100644
--- a/README.md
+++ b/README.md
@@ -196,7 +196,7 @@ Remember to restart the IDE whenever you change `platform.txt`, `boards.txt` or
 
 ## Release History
 
-- [HEAD](https://github.com/mcci-catena/Arduino_Core_STM32/). Added support for new board Model 4917 and Model 4916. Added Two HW Serial support for Catena 4630.
+- [v3.1.0](https://github.com/mcci-catena/Arduino_Core_STM32/releases/tag/v3.1.0). Feature enhancement. Added support for new board Model 4917 ([#196](https://github.com/mcci-catena/Arduino_Core_STM32/issues/196)) and Model 4916 ([#198](https://github.com/mcci-catena/Arduino_Core_STM32/issues/198)). Added Two HW Serial support for Catena 4630 ([#199](https://github.com/mcci-catena/Arduino_Core_STM32/issues/199)).
 
 - [v3.0.5](https://github.com/mcci-catena/Arduino_Core_STM32/releases/tag/v3.0.5) Patch release. Don't use `<algorithm>` to implement `min()` and `max()` ([#184](https://github.com/mcci-catena/Arduino_Core_STM32/issues/184)). Prevent hangs if USB is enabled but D+/D- float to high/high ([#189](https://github.com/mcci-catena/Arduino_Core_STM32/issues/189), [#190](https://github.com/mcci-catena/Arduino_Core_STM32/issues/190)) -- thanks to Mohammed Mayyan ([@mmayyan](https://github.com/mhmayyan)) for help in finding this.
 
diff --git a/cores/arduino/Arduino.h b/cores/arduino/Arduino.h
index 96c78b624d..ddd5f3fb0e 100644
--- a/cores/arduino/Arduino.h
+++ b/cores/arduino/Arduino.h
@@ -1,7 +1,7 @@
 /*
   Arduino.h - Main include file for the Arduino SDK
   Copyright (c) 2005-2013 Arduino Team.  All right reserved.
-  Copyright (c) 2019-2022 MCCI Corporation. All rights reserved.
+  Copyright (c) 2019-2023 MCCI Corporation. All rights reserved.
 
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
@@ -52,7 +52,7 @@
 ///     \ref _mcci_arduino_version_calc() to compare relative versions.
 ///
 #define	_mcci_arduino_version	\
-  _mcci_arduino_version_calc(3, 1, 0, 2)	/* v3.1.0-2 */
+  _mcci_arduino_version_calc(3, 1, 0, 0)	/* v3.1.0 */
 
 ///
 /// \brief get major version code from semantic version value