diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4c43df17..8450817f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,8 +3,10 @@
 
 
 
-<h2>Version 2.0.0 - ??/??/2024</h2>
+<h2>Version 2.0.0pre1 - ??/??/2024</h2>
       <ul>
+        <li>Added OpenAI ChatGPT API connection [<a href="https://github.com/micz/ThunderAI/issues/40">#40</a>].</li>
+        <li>Information text in the options page improved.</li>
         <li>...</li>
       </ul>
 <h2>Version 1.2.1 - 20/07/2024</h2>
diff --git a/manifest.json b/manifest.json
index 45ade310..11bb7975 100644
--- a/manifest.json
+++ b/manifest.json
@@ -2,7 +2,7 @@
     "manifest_version": 2,
     "name": "ThunderAI",
     "description": "__MSG_extensionDescription__",
-    "version": "2.0.0",
+    "version": "2.0.0pre1",
     "author": "Mic (m@micz.it)",
     "homepage_url": "https://micz.it/thunderbird-addon-thunderai/",
     "browser_specific_settings": {
diff --git a/options/mzta-release-notes.html b/options/mzta-release-notes.html
index d36fcaad..1c67713d 100644
--- a/options/mzta-release-notes.html
+++ b/options/mzta-release-notes.html
@@ -7,8 +7,10 @@
   <body>
     <div id="miczBackPrefs"><a href="mzta-options.html">__MSG_backToOptionsText__</a></div>
     <div id="miczRelNotes"><h1>ThunderAI Release Notes</h1>
-      <h2>Version 2.0.0 - ??/??/2024</h2>
+      <h2>Version 2.0.0pre1 - ??/??/2024</h2>
       <ul>
+        <li>Added OpenAI ChatGPT API connection [<a href="https://github.com/micz/ThunderAI/issues/40">#40</a>].</li>
+        <li>Information text in the options page improved.</li>
         <li>...</li>
       </ul>
       <h2>Version 1.2.1 - 20/07/2024</h2>
