diff --git a/CHANGELOG b/CHANGELOG
index 396c42ed3979e15c4e49a2ba22ec5189fa67b632..95fbb1792aebc08d17a2f02a09f653723a7f45d2 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,2 +1,2 @@
-08.03.2020
-- added cisco_asyncos_dns, cisco_asyncos_messageage, cisco_asyncos_resources
\ No newline at end of file
+2020-03-08: added cisco_asyncos_dns, cisco_asyncos_messageage, cisco_asyncos_resources
+2021-03-21: rewrite cisco_asyncos_cpu/cisco_asyncos_mem for CMK 2.0