diff --git a/CHANGELOG.md b/CHANGELOG.md
index 43d1126394b7..82fc8831f1f0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -139,6 +139,7 @@ Every module contains its own CHANGELOG.md. Please refer to the module you are i
 * (internal) [#21412](https://github.com/cosmos/cosmos-sdk/pull/21412) Using unsafe.String and unsafe.SliceData.
 * (client) [#21436](https://github.com/cosmos/cosmos-sdk/pull/21436) Use `address.Codec` from client.Context in `tx.Sign`.
 * (x/genutil) [#21249](https://github.com/cosmos/cosmos-sdk/pull/21249) Incremental JSON parsing for AppGenesis where possible.
+* (testnet) [#21941](https://github.com/cosmos/cosmos-sdk/pull/21941) Regenerate addrbook.json for in place testnet.
 
 ### Bug Fixes