diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5395989f..38a7c7d8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,7 +13,8 @@ BREAKING CHANGES:
  - [types] use `customtype` feature of `gogo/protobuf` to replace `[]byte` with `data.Bytes` in all generated types :)
     - this eliminates the need for additional types like ResultQuery
  - [types] `pubKey` -> `pub_key`
- - [types] `uint64` -> `int64`
+ - [types] `uint64` -> `int32` for `Header.num_txs` and `PartSetHeader.total`, but generated code uses `int`
+ - [types] `uint64` -> `int64` for everything else
  - [abci-cli] codes are printed as their number instead of a message, except for `code == 0`, which is still printed as `OK`
 
 FEATURES: