diff --git a/CHANGES.rst b/CHANGES.rst
index 0a7a223e..f50fcf19 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -3,6 +3,13 @@ Changes
 =======
 
 
+5.16.0 (2021-05-19)
+-------------------
+
+- Add ``AXES_CLIENT_STR_CALLABLE`` setting.
+ [smtydn]
+
+
 5.15.0 (2021-05-03)
 -------------------