--- a/docs/changelog	Fri Apr 02 11:59:41 2021 +0200
+++ b/docs/changelog	Sat May 01 14:27:20 2021 +0200
@@ -1,5 +1,24 @@
 Change Log
 ----------
+Version 21.5:
+- bug fixes
+- Code Style Checker
+  -- added a checker to find code that could be simplified
+  -- added capability to the results page to filter the messages based on
+     message code
+  -- improved the statistics handling
+  -- updated pycodestyle to version 2.7.0
+- MicroPython
+  -- added option to select the baud rate for flashing ESP32 and ESP8266 boards
+  -- updated the BBC micro:bit API file to support micro:bit V2
+- Python Lexer
+  -- updated the substyle contents
+- Syntax Checker
+  -- updated pyflakes to version 2.3.1
+- Third Party packages
+  -- removed most of the bundled Third Party packages in favour of pip
+     installed packages
+
 Version 21.4:
 - bug fixes
 - Code Style Checker