diff --git a/CHANGELOG b/CHANGELOG
index b5b3db5ed84ce2f27bcb9d765597839c3306c90a..d058237f8463424b6ab43d8ce52aa75be6503de4 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
 2018-08-03: changed snmp scan function
 2018-08-13: code cleanup, add metrics
 2020-06-08: changed snmp-scan function
+2021-09-06: rewritten for CMK 2.0
+2021-09-07: added WATO for check and discovery function
+            renamed from checkpoint_vsx to checkpoint_vsx_system