diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index 1152950f79..c8b66b9b75 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -101,6 +101,7 @@ Changelog
  * Fix: Prevent multiple URLs from being combined into one when pasting links into a rich text input (Thibaud Colas)
  * Fix: Fix error on workflow settings view with multiple snippet types assigned to the same workflow on Postgres (Sage Abdullah)
  * Fix: Prevent history view from breaking if a log entry's revision is missing (Matt Westcott)
+ * Docs: Upgrade sphinx-wagtail-theme to v6.4.0, with a new search integration and Read the Docs Addons bug fixes (Thibaud Colas)
 
 
 6.2.2 (24.09.2024)
diff --git a/docs/releases/6.2.3.md b/docs/releases/6.2.3.md
index ddf5202e7b..9111a632ed 100644
--- a/docs/releases/6.2.3.md
+++ b/docs/releases/6.2.3.md
@@ -17,3 +17,8 @@ depth: 1
  * Prevent multiple URLs from being combined into one when pasting links into a rich text input (Thibaud Colas)
  * Fix error on workflow settings view with multiple snippet types assigned to the same workflow on Postgres (Sage Abdullah)
  * Prevent history view from breaking if a log entry's revision is missing (Matt Westcott)
+
+
+### Documentation
+
+ * Upgrade sphinx-wagtail-theme to v6.4.0, with a new search integration and Read the Docs Addons bug fixes (Thibaud Colas)