diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index df2064b61b..600dc4997e 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -3,6 +3,7 @@ Changelog
 
 0.5 (xx.xx.20xx)
 ~~~~~~~~~~~~~~~~
+ * Explorer nav now rendered separately and fetched with AJAX when needed
  * Added decorator syntax for hooks
  * Replaced lxml dependency with html5lib, to simplify installation
 
diff --git a/docs/releases/0.5.rst b/docs/releases/0.5.rst
index f0cd01f40b..fa7012c2ea 100644
--- a/docs/releases/0.5.rst
+++ b/docs/releases/0.5.rst
@@ -30,6 +30,14 @@ Core
  * The lxml library (used for whitelisting and rewriting of rich text fields) has been replaced with the pure-python html5lib library, to simplify installation.
 
 
+Admin
+-----
+
+ * Explorer nav now rendered separately and fetched with AJAX when needed.
+
+   This improves the general performance of the amdin interface for large sites.
+
+
 Bug fixes
 ~~~~~~~~~