diff --git a/CHANGELOG b/CHANGELOG
index 475e9a37f57d3b2dd37279c913cf543dc6d70621..6437faa4c597b5760705c0b232c064f8ae3157b2 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -3,4 +3,8 @@
 2018-03-07: added Licenses
 2020-06-01: cleanup, prepared for cmk1.7x, 
             rename from inv_checkpoint_svn to checkpoint_inv_base
-            changed os info to table
\ No newline at end of file
+            changed os info to table
+2020-11-27: rewrite for CMK check API 1.0 (CMK 2.0)
+2020-11-28: added available updates
+2021-02-08: transfered license/support info to seperate plugin
+2021-02-22: code cleanup