diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5fc61e81..78b67bee 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,7 @@
         <li>Account exclusion lists for add tags and antispam are enforced only for automatic analysis of incoming emails and not for the context menu action that is always executed [<a href="https://github.com/micz/ThunderAI/issues/749">#749</a>].</li>
         <li><i>[All APIs]</i> Inline auto translation for emails added [<a href="https://github.com/micz/ThunderAI/issues/247">#247</a>].</li>
         <li>Custom menus configuration added. Now it's possibile to define which prompts show in the ThunderAI menu, which ones in the context menu and in which order [<a href="https://github.com/micz/ThunderAI/issues/49">#49</a>, <a href="https://github.com/micz/ThunderAI/issues/184">#184</a>, <a href="https://github.com/micz/ThunderAI/issues/680">#680</a>].</li>
+        <li><i>[All APIs]</i> Error messages added also for background operations when the API has not been configured correctly [<a href="https://github.com/micz/ThunderAI/issues/766">#766</a>].</li>
         <li>...</li>
       </ul>
 <h2>Version 4.0.3 - 20/03/2026</h2>
diff --git a/options/mzta-release-notes.html b/options/mzta-release-notes.html
index 808eb6b1..7ac2ede7 100644
--- a/options/mzta-release-notes.html
+++ b/options/mzta-release-notes.html
@@ -24,6 +24,7 @@
         <li>Account exclusion lists for add tags and antispam are enforced only for automatic analysis of incoming emails and not for the context menu action that is always executed [<a href="https://github.com/micz/ThunderAI/issues/749">#749</a>].</li>
         <li><i>[All APIs]</i> Inline auto translation for emails added [<a href="https://github.com/micz/ThunderAI/issues/247">#247</a>].</li>
         <li>Custom menus configuration added. Now it's possibile to define which prompts show in the ThunderAI menu, which ones in the context menu and in which order [<a href="https://github.com/micz/ThunderAI/issues/49">#49</a>, <a href="https://github.com/micz/ThunderAI/issues/184">#184</a>, <a href="https://github.com/micz/ThunderAI/issues/680">#680</a>].</li>
+        <li><i>[All APIs]</i> Error messages added also for background operations when the API has not been configured correctly [<a href="https://github.com/micz/ThunderAI/issues/766">#766</a>].</li>
         <li>...</li>
       </ul>
       <h2>Version 4.0.3 - 20/03/2026</h2>