diff --git a/CHANGES b/CHANGES
index 319af7b76a..594c850699 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,8 @@
+5676.	[func]		Memory allocation has been substantially refactored,
+			and is now based on the memory allocation API
+			provided by 'libjemalloc'. This is now a build
+			dependency for BIND. [GL #2433]
+
 5675.	[bug]		Improve BIND's compatibility with DoH clients by
 			ignoring an "Accept" HTTP header value. [GL !5246]
 
diff --git a/doc/notes/notes-current.rst b/doc/notes/notes-current.rst
index 0ef55db54c..58b24f4ffb 100644
--- a/doc/notes/notes-current.rst
+++ b/doc/notes/notes-current.rst
@@ -51,6 +51,11 @@ Feature Changes
   configuration option ``--disable-doh``.  This allows BIND 9 to be
   compiled without libnghttp2 library. [GL #2478]
 
+- Memory allocation has been substantially refactored, and is now based on
+  the memory allocation API provided by the `jemalloc` library on platforms
+  where it is available. This library is now recommended for building BIND 9.
+  :gl:`#2433`
+
 Bug Fixes
 ~~~~~~~~~