diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6949f05b..b14068a9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@
         <li>Added the <i>{%mail_folder_name%}</i> placeholder to get the mail folder name [<a href="https://github.com/micz/ThunderAI/issues/253">#253</a>].</li>
         <li>Added the <i>{%mail_folder_path%}</i> placeholder to get the mail folder path [<a href="https://github.com/micz/ThunderAI/issues/253">#253</a>].</li>
         <li>Added the <i>{%account_email_address%}</i> placeholder to get the current account mail address [<a href="https://github.com/micz/ThunderAI/issues/272">#272</a>].</li>
+        <li><i>[ChatGPT Web][All APIs]</i> Added a diff viwer to compare the old and new text. This feature could be activated at prompt level, and it's useful for "rewrite" prompts [<a href="https://github.com/micz/ThunderAI/issues/109">#109</a>].</li>
         <li><i>[All APIs]</i> Added a context menu to automatically add tags and run the spam filter on selected messages. [<a href="https://github.com/micz/ThunderAI/issues/262">#262</a>].</li>
         <li><i>[All APIs]</i> It's now possibile to define a timezone in the calendar event settings page [<a href="https://github.com/micz/ThunderAI/issues/250">#250</a>].</li>
         <li><i>[All APIs]</i> It's now possibile to add the attendees in the calendar event, be sure to update the prompt in the settings [<a href="https://github.com/micz/ThunderAI/issues/258">#258</a>].</li>
diff --git a/options/mzta-release-notes.html b/options/mzta-release-notes.html
index 293de003..9c621f72 100644
--- a/options/mzta-release-notes.html
+++ b/options/mzta-release-notes.html
@@ -12,6 +12,7 @@
         <li>Added the <i>{%mail_folder_name%}</i> placeholder to get the mail folder name [<a href="https://github.com/micz/ThunderAI/issues/253">#253</a>].</li>
         <li>Added the <i>{%mail_folder_path%}</i> placeholder to get the mail folder path [<a href="https://github.com/micz/ThunderAI/issues/253">#253</a>].</li>
         <li>Added the <i>{%account_email_address%}</i> placeholder to get the current account mail address [<a href="https://github.com/micz/ThunderAI/issues/272">#272</a>].</li>
+        <li><i>[ChatGPT Web][All APIs]</i> Added a diff viwer to compare the old and new text. This feature could be activated at prompt level, and it's useful for "rewrite" prompts [<a href="https://github.com/micz/ThunderAI/issues/109">#109</a>].</li>
         <li><i>[All APIs]</i> Added a context menu to automatically add tags and run the spam filter on selected messages. [<a href="https://github.com/micz/ThunderAI/issues/262">#262</a>].</li>
         <li><i>[All APIs]</i> It's now possibile to define a timezone in the calendar event settings page [<a href="https://github.com/micz/ThunderAI/issues/250">#250</a>].</li>
         <li><i>[All APIs]</i> It's now possibile to add the attendees in the calendar event, be sure to update the prompt in the settings [<a href="https://github.com/micz/ThunderAI/issues/258">#258</a>].</li>