diff --git a/CHANGELOG b/CHANGELOG
index 4f92eb0ed3cfea06d146367ca33240e3c8c20b48..ceef6f548015917bfb54efdd40e469746e5cbdc0 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -3,3 +3,4 @@
 2022-11-14: made state on no response configurable
 2022-11-15: added short (-) options, doesn't work with long (--) options
 2023-06-07: moved gui files to ~/local/lib/chek_mk/gui/plugins/...
+2024-01-01: changed max. CMK version to 2.3.0b1