diff --git a/CHANGELOG.md b/CHANGELOG.md
index d94e3d6..4d3e909 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,3 +5,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+
+## [1.0.0] - 2023-02-28
+### Added
+- project structure
+- CI & CD on CircleCI
+- Abstract, API Layer, Hunter, Reacher, WhoisXML and ZeroBounce integrations
diff --git a/VERSION b/VERSION
index e69de29..afaf360 100644
--- a/VERSION
+++ b/VERSION
@@ -0,0 +1 @@
+1.0.0
\ No newline at end of file