diff --git a/docs/changelog.rst b/docs/changelog.rst
index 8ba41ae..c790396 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -2,6 +2,13 @@
  Changelog
 ===========
 
+.. _v3_3:
+
+3.3 (2021-01-17)
+----------------
+
+- The ``table.m2m()`` method now accepts an optional ``alter=True`` argument to specify that any missing columns should be added to the referenced table. See :ref:`python_api_m2m`. (`#222 <https://github.com/simonw/sqlite-utils/issues/222>`__)
+
 .. _v3_2_1:
 
 3.2.1 (2021-01-12)
diff --git a/setup.py b/setup.py
index b1a7324..eded07a 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@ from setuptools import setup, find_packages
 import io
 import os
 
-VERSION = "3.2.1"
+VERSION = "3.3"
 
 
 def get_long_description():