diff --git a/changelog.md b/changelog.md
index 037accc506..8af90cbcc4 100644
--- a/changelog.md
+++ b/changelog.md
@@ -15,6 +15,7 @@
 
 * [1535](https://github.com/zeta-chain/node/issues/1535) - Avoid voting on wrong ballots due to false blockNumber in EVM tx receipt
 * [1588](https://github.com/zeta-chain/node/pull/1588) - fix chain params comparison logic
+* [1638](https://github.com/zeta-chain/node/issues/1638) - additional check to make sure external chain height always increases
 * [1650](https://github.com/zeta-chain/node/pull/1605) - exempt (discounted) *system txs* from min gas price check and gas fee deduction
 
 ### CI