diff --git a/CHANGELOG.md b/CHANGELOG.md
index 42b8872fb6..eff24ae6e2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -27,6 +27,8 @@ and this project adheres to
   `MODULE_SERIALIZATION_VERSION` to "v5". ([#1664])
 - cosmwasm-vm: When enabling `print_debug` the debug logs are now printed to
   STDERR instead of STDOUT by default ([#1667]).
+- cosmwasm-vm: Add `Instance::set_debug_handler`/`unset_debug_handler` to allow
+  customizing the handling of debug messages emitted by the contract ([#1667]).
 
 [#1511]: https://github.com/CosmWasm/cosmwasm/issues/1511
 [#1629]: https://github.com/CosmWasm/cosmwasm/pull/1629