diff --git a/CHANGELOG.md b/CHANGELOG.md
index c5357fb89..1177b861c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+### Changed
+
+- Improved the validation in the activities import (expects positive values for `quantity` and `unitPrice`)
+
+## Unreleased
+
 ### Added
 
 - Added the endpoint `GET api/v1/account/:id/balances` which provides historical cash balances