--- a/docs/changelog	Sat Jul 03 11:47:48 2021 +0200
+++ b/docs/changelog	Sat Sep 04 11:34:54 2021 +0200
@@ -1,5 +1,12 @@
 Change Log
 ----------
+Version 21.9:
+- bug fixes
+- MicroPython
+  -- extended the list of known CircuitPython and UF2 capable devices
+- Unit Test
+  -- added support for sub-tests
+
 Version 21.7:
 - bug fixes