diff --git a/HISTORY.rst b/HISTORY.rst
index a00a78a3..32170978 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -3,6 +3,15 @@
 Changelog
 =========
 
+v4.16.0rc1
+----------
+Release Date: 2023-08-11
+
+* Bug fix
+
+  * Fix intermittent errors due to mismatched responses when multiple
+    couroutines access a new connection pool.
+
 v4.15.1
 -------
 Release Date: 2023-08-10
@@ -1724,3 +1733,4 @@ v1.0.1
 
 
 
+