diff --git a/CHANGELOG.md b/CHANGELOG.md
index e70f339..8c3de8a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,4 +4,6 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [1.0.0] - 2018-02-21
+### Added
+- Initial version uploaded to CTAN.
diff --git a/authorarchive.sty b/authorarchive.sty
index 5c5da1f..6493c16 100644
--- a/authorarchive.sty
+++ b/authorarchive.sty
@@ -8,7 +8,9 @@
 %%   OR
 %%   The 2-clause BSD-style license.
 \NeedsTeXFormat{LaTeX2e}\relax
-\ProvidesClass{authorarchive}[Unreleased Achim D. Brucker]
+\ProvidesClass{authorarchive}
+  [2018/02/21 v1.0.0%
+  Self-archiving information for scientific publications.]
 %
 \RequirePackage{ifthen}
 \RequirePackage{graphicx}