CHANGELOG.md in eco-helpers-1.5.5 vs CHANGELOG.md in eco-helpers-1.5.6

@@ -1,12 +1,22 @@
 # Change Log
 All notable changes to this project will be documented in this file.
 
-## [1.5.5] - 2020-12-xx
+## [1.5.6] - 2020-12-04
 
 ### Added
 ### Changed
 ### Fixed
+  - `Eco::API::UseCases::DefaultCases::RestoreDBCase` fixed typo and slightly improved
+  - fixed some back-end errors when chaining usecases
+  - `Eco::API::UseCases::DefaultCases::OrgDataConvertCase` improved
+
+## [1.5.5] - 2020-12-03
+
+### Added
+### Changed
+### Fixed
+  - rubies previous to `2.5` do not have `yield_self`
 
 ## [1.5.4] - 2020-12-02
 
 ### Added
   - update `ecoportal-api` dependency