diff --git a/docs/changes.rst b/docs/changes.rst
index bab7113..eb3834a 100644
--- a/docs/changes.rst
+++ b/docs/changes.rst
@@ -48,6 +48,12 @@ v0.4 (2013-09-03)
 
 - Reorganized and extended documentation.
 
+v0.3.1 (2013-09-20)
+^^^^^^^^^^^^^^^^^^^
+
+- Backported a fix from master that makes 0.3.x compatible with newer
+  versions of six.
+
 v0.3 (2013-05-15)
 ^^^^^^^^^^^^^^^^^