diff --git a/CHANGELOG.md b/CHANGELOG.md
index 81a4ccb..527fc39 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- Add `versions` table to store versoin information of converter(this software)
+- Add `skew` columnt to `qaqc_positions` table
+
 ## [0.1.0]
 
 ### Added