diff --git a/CHANGES.rst b/CHANGES.rst
index ff0e417..594102a 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -3,8 +3,8 @@ Changelog
 
 For changes before version 3.0, see ``HISTORY.rst``.
 
-5.4 (unreleased)
-----------------
+5.3.1 (2022-03-29)
+------------------
 
 - Prevent race condition in guarded_import
   (see `#123 <https://github.com/zopefoundation/AccessControl/issues/123>`_)
diff --git a/setup.py b/setup.py
index a5995e7..efec5fb 100644
--- a/setup.py
+++ b/setup.py
@@ -32,7 +32,7 @@
                  join('include', 'Acquisition', 'Acquisition.h')]),
 ]
 
-version = '5.4.dev0'
+version = '5.3.1'
 
 
 setup(name='AccessControl',