diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index d250e68..c4e4c52 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -7,6 +7,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- Empty input checking.
+
+### Changed
+
+- Enums for certain constants.
+
 ## [1.4.0] - 2024.10.22
 
 ### Added