diff --git a/CHANGES.rst b/CHANGES.rst
index 8c4e986..7433327 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -6,6 +6,17 @@ lxml_html_clean changelog
 Unreleased
 ==========
 
+0.4.0 (2024-11-12)
+==================
+
+Bugs fixed
+----------
+
+* The ``Cleaner()`` now scans for hidden JavaScript code embedded
+  within CSS comments. In certain contexts, such as within ``<svg>`` or ``<math>`` tags,
+  ``<style>`` tags may lose their intended function, allowing comments
+  like ``/* foo */`` to potentially be executed by the browser.
+
 0.3.1 (2024-10-09)
 ==================
 
diff --git a/setup.cfg b/setup.cfg
index 0fd6453..354c538 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = lxml_html_clean
-version = 0.3.1
+version = 0.4.0
 description = HTML cleaner from lxml project
 long_description = file:README.md
 long_description_content_type = text/markdown