diff --git a/CHANGELOG.md b/CHANGELOG.md
index 10589696..bc9be316 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,6 +19,7 @@
         <li>Added the <i>{%mail_html_body_or_selected%}</i> placeholder to retrieve the selected HTML or the full HTML body of the email if no selection is present [<a href="https://github.com/micz/ThunderAI/issues/641">#641</a>].</li>
         <li><i>[All APIs]</i> Added an option to get a calendar event without selecting some text, but using the full text body of the email [<a href="https://github.com/micz/ThunderAI/issues/518">#518</a>].</li>
         <li><i>[All APIs]</i> Added a new menu item to create a calendar event from the text saved in the clipboard [<a href="https://github.com/micz/ThunderAI/issues/362">#362</a>].</li>
+        <li>Added a button to copy a prompt in the Custom Prompts page [<a href="https://github.com/micz/ThunderAI/issues/598">#598</a>].</li>
         <li>...</li>
       </ul>
 <h2>Version 3.8.3 - 22/01/2026</h2>
diff --git a/options/mzta-release-notes.html b/options/mzta-release-notes.html
index 752d1aad..d1c22e70 100644
--- a/options/mzta-release-notes.html
+++ b/options/mzta-release-notes.html
@@ -22,6 +22,7 @@
         <li>Added the <i>{%mail_html_body_or_selected%}</i> placeholder to retrieve the selected HTML or the full HTML body of the email if no selection is present [<a href="https://github.com/micz/ThunderAI/issues/641">#641</a>].</li>
         <li><i>[All APIs]</i> Added an option to get a calendar event without selecting some text, but using the full text body of the email [<a href="https://github.com/micz/ThunderAI/issues/518">#518</a>].</li>
         <li><i>[All APIs]</i> Added a new menu item to create a calendar event from the text saved in the clipboard [<a href="https://github.com/micz/ThunderAI/issues/362">#362</a>].</li>
+        <li>Added a button to copy a prompt in the Custom Prompts page [<a href="https://github.com/micz/ThunderAI/issues/598">#598</a>].</li>
         <li>...</li>
       </ul>
       <h2>Version 3.8.3 - 22/01/2026</h2>