diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9af970d7..aa4f59ac 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,10 @@
+
Version 4.0.5 - ??/??/2026
+
Version 4.0.4 - 26/03/2026
- Fix: Correctly showing the selected model in the special prompt pages.
diff --git a/manifest.json b/manifest.json
index 05f6c2bf..197f2cc1 100644
--- a/manifest.json
+++ b/manifest.json
@@ -2,7 +2,7 @@
"manifest_version": 2,
"name": "ThunderAI",
"description": "__MSG_extensionDescription__",
- "version": "4.0.4",
+ "version": "4.0.5",
"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 58534181..edae537c 100644
--- a/options/mzta-release-notes.html
+++ b/options/mzta-release-notes.html
@@ -7,6 +7,10 @@
ThunderAI Release Notes
+
Version 4.0.5 - ??/??/2026
+
Version 4.0.4 - 26/03/2026
- Fix: Correctly showing the selected model in the special prompt pages.