diff --git a/.hgignore b/.hgignore
index 97c5c42..4896d45 100644
--- a/.hgignore
+++ b/.hgignore
@@ -4,4 +4,5 @@ syntax: glob
 env
 *.egg
 *.egg-info
+dist
 
diff --git a/CHANGES.txt b/CHANGES.txt
index 48f24da..3efcdbe 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,8 +1,8 @@
 Changes
 =======
 
-Next release
-------------
+0.4 (2010-03-30)
+----------------
 
 - Add ``colander.DateTime`` and ``colander.Date`` data types.
 
diff --git a/docs/conf.py b/docs/conf.py
index 367a92d..f9f6a0a 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -52,7 +52,7 @@ copyright = '2010, Repoze Developers <repoze-dev@lists.repoze.org>'
 # other places throughout the built documents.
 #
 # The short X.Y version.
-version = '0.3'
+version = '0.4'
 # The full version, including alpha/beta/rc tags.
 release = version
 
diff --git a/setup.py b/setup.py
index 6667458..aab3962 100644
--- a/setup.py
+++ b/setup.py
@@ -24,7 +24,7 @@ CHANGES = open(os.path.join(here, 'CHANGES.txt')).read()
 requires = ['iso8601']
 
 setup(name='colander',
-      version='0.3',
+      version='0.4',
       description=('A simple schema-based serialization and deserialization '
                    'library'),
       long_description=README + '\n\n' +  CHANGES,