diff --git a/CHANGES.rst b/CHANGES.rst
index 02fba2a..d21e222 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,13 +1,12 @@
 Changelog
 =========
 
-4.5.0 (unreleased)
+4.4.3 (2017-11-23)
 ------------------
 
 - Fix the extremely rare potential for a crash when the C extensions
   are in use. See `issue 21 <https://github.com/zopefoundation/Acquisition/issues/21>`_.
 
-
 4.4.2 (2017-05-12)
 ------------------
 
diff --git a/setup.py b/setup.py
index 3d3a8be..220af94 100644
--- a/setup.py
+++ b/setup.py
@@ -36,7 +36,7 @@
                   include_dirs=['include', 'src']),
     ]
 
-__version__ = '4.5.0.dev0'
+__version__ = '4.4.3'
 
 setup(
     name='Acquisition',