diff --git a/CHANGELOG.md b/CHANGELOG.md
index d7aa2c366ffa7d92d6ea6aeb7cecc8803edf4d17..36027672a40fb1af1a4e117c9ec546d00fa90cfa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,13 @@
 All notable changes to this project will be documented in this file. See
 [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## [1.4.0](https://code.vereign.com/gaiax/ocm/ocm-engine/compare/v1.3.0...v1.4.0) (2023-06-09)
+
+
+### Features
+
+* implement attestation micro service ([40d9bfe](https://code.vereign.com/gaiax/ocm/ocm-engine/commit/40d9bfeb290ba35ec425bcd8c584dcd83a494968))
+
 ## [1.3.0](https://code.vereign.com/gaiax/ocm/ocm-engine/compare/v1.2.0...v1.3.0) (2023-06-09)