diff --git a/CHANGELOG b/CHANGELOG
index bb3d51513d93d674687c2582878ae6e99d3996fb..be5015799ec802035091767ba6d4be1f5669ad6f 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1 +1,4 @@
 2023-12-26: initial release
+2024-04-07: fixed missing/wrong netmask (ThX bitwiz@froum.checkmk.com)
+            improved validation if SNMP input data
+            drop this host ip address (0.0.0.0)