diff --git a/release_history.py b/release_history.py
index a12c2ef..7bb2ad1 100755
--- a/release_history.py
+++ b/release_history.py
@@ -65,6 +65,7 @@ releases = (Tag('1.0.0',   '739', '20120814'),
             Tag('2.5.0', '', '20210304'),
             Tag('2.5.1', '', '20210305'),
             Tag('2.5.2', '', '20210528'),
+            Tag('2.5.3', '', '20210823'),
 )