diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6ff489d..04f9d71 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,8 @@ Types of changes: `Added`, `Changed`, `Deprecate`, `Removed`, `Fixed`, `Secruity
 
 ## [Unreleased]
 
+## v2.1.0 - 24.02.2024 - Used entities can no longer be deleted
+
 ### Added
 - Added support for `allow[Edit|Delete]` functions to prevent delete and edit operations of used entities
 
diff --git a/resources/Views/about.php b/resources/Views/about.php
index b192386..99b9e22 100644
--- a/resources/Views/about.php
+++ b/resources/Views/about.php
@@ -5,7 +5,7 @@
 <table class="scrollable">
     <tr>
         <td>Bio-Manager Version</td>
-        <td class="right">2.0.1</td>
+        <td class="right">2.1.0</td>
     </tr>
     <tr>
         <td><?= __('Developer') ?></td>