diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1c06b0e64..414f9bed8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+- Deprecated `firstBuyDate` in favor of `dateOfFirstActivity` in the portfolio calculator
 - Deprecated `transactionCount` in favor of `activitiesCount` in the portfolio calculator and service
 - Removed the deprecated `firstBuyDate` from the endpoint `GET api/v1/portfolio/holding/:dataSource/:symbol`