diff --git a/CHANGES.rst b/CHANGES.rst
index 736756b..1fc9a62 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,8 +1,8 @@
 CHANGES
 =======
 
-master (unreleased)
--------------------
+2.3.1 (2015-07-20)
+------------------
 
 * Remove all translation-related automation in `setup.py`. Fixes GH-178 and
   GH-179. Thanks Joe Weiss, Matt Molyneaux, and others for the reports.
diff --git a/model_utils/__init__.py b/model_utils/__init__.py
index a09be7d..272f4ca 100644
--- a/model_utils/__init__.py
+++ b/model_utils/__init__.py
@@ -1,4 +1,4 @@
 from .choices import Choices
 from .tracker import FieldTracker, ModelTracker
 
-__version__ = '2.4a1'
+__version__ = '2.3.1'