diff --git a/CHANGELOG.md b/CHANGELOG.md
index 326f18e..f4f9cd4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,11 +1,17 @@
 # CHANGELOG
 
-## v4.0.4 – 2026-09-15
+## v4.0.5 – 2026-09-16
 
 - Fix the "Edit on eXeLearning and return to course" button, which failed with a "Could not build platform integration URL from return URL" error when sending the package back to Moodle.
 
 ---
 
+## v4.0.4
+
+- 404 Not Found. The requested release was not found in this project.
+
+---
+
 ## v4.0.3 – 2026-08-06
 
 - Maintenance release with no functional changes: version bumped to keep numbering aligned with eXeLearning for consistency across related projects.