diff --git a/.travis.yml b/.travis.yml
index 3c9ad6b..5953a74 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,7 @@ python:
     - 2.6
     - 2.7
     - 3.3
+    - 3.4
 install:
     - pip install .
     - pip install zope.error[test]
diff --git a/CHANGES.rst b/CHANGES.rst
index 463c801..81af072 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,31 +2,31 @@
 CHANGES
 =======
 
-4.1.2 (unreleased)
+4.2.0 (unreleased)
 ------------------
 
-- TBD
+- Add support for Python 3.4.
 
 
 4.1.1 (2014-12-22)
 ------------------
 
-- Enabled testing on Travis.
+- Enable testing on Travis.
 
 
 4.1.0 (2013-02-21)
 ------------------
 
-- Added compatibility with Python 3.3
+- Add compatibility with Python 3.3
 
 
 4.0.0 (2012-12-10)
 ------------------
 
-- Replaced deprecated ``zope.interface.implements`` usage with equivalent
+- Replace deprecated ``zope.interface.implements`` usage with equivalent
   ``zope.interface.implementer`` decorator.
 
-- Dropped support for Python 2.4 and 2.5.
+- Drop support for Python 2.4 and 2.5.
 
 - Sort request items for presentation in the error reporting utility.
 
@@ -36,12 +36,12 @@ CHANGES
 3.7.4 (2012-02-01)
 ------------------
 
-- Added explicit tests for escaping introduced in 3.7.3.
+- Add explicit tests for escaping introduced in 3.7.3.
 
 - Handing names of classes those string representation cannot
   be determined as untrusted input thus escaping them in error reports.
 
-- Fixed tests on Python 2.4 and 2.5.
+- Fix tests on Python 2.4 and 2.5.
 
 3.7.3 (2012-01-17)
 ------------------
@@ -59,31 +59,31 @@ CHANGES
 3.7.1 (2010-09-25)
 ------------------
 
-- Added test extra to declare test dependency on ``zope.testing``.
+- Add test extra to declare test dependency on ``zope.testing``.
 
 
 3.7.0 (2009-09-29)
 ------------------
 
-- Cleaned up dependencies. Droped all testing dependencies as we only need
+- Clean up dependencies. Droped all testing dependencies as we only need
   zope.testing now.
 
-- Fixed ImportError when zope.testing is not available for some reason.
+- Fix ImportError when zope.testing is not available for some reason.
 
-- Removed zcml slug and old zpkg-related files.
+- Remove zcml slug and old zpkg-related files.
 
-- Removed word "version" from changelog entries.
+- Remove word "version" from changelog entries.
 
-- Changed package's mailing list address to zope-dev at zope.org as
+- Change package's mailing list address to zope-dev at zope.org as
   zope3-dev at zope.org is now retired. Also changed `cheeseshop` to
   `pypi` in the package's homepage url.
 
-- Added dependency on ZODB3 as we use Persistent.
+- Add dependency on ZODB3 as we use Persistent.
 
-- Used a mock request for testing. Dropped the dependency on zope.publisher
+- Use a mock request for testing. Dropped the dependency on zope.publisher
   which was really only a testing dependency.
 
-- Reduced the dependency on zope.container to one on zope.location by no
+- Reduce the dependency on zope.container to one on zope.location by no
   longer using the Contained mix-in class.
 
 3.6.0 (2009-01-31)
@@ -97,7 +97,7 @@ CHANGES
 3.5.1 (2007-09-27)
 ------------------
 
-- rebumped to replace faulty egg
+- Rebump to replace faulty egg
 
 3.5.0
 -----
diff --git a/setup.py b/setup.py
index 4a3efcb..3cc665d 100644
--- a/setup.py
+++ b/setup.py
@@ -28,7 +28,7 @@ def read(*rnames):
         return f.read()
 
 setup(name='zope.error',
-    version='4.1.2.dev0',
+    version='4.2.0.dev0',
     author='Zope Foundation and Contributors',
     author_email='zope-dev@zope.org',
     description = "An error reporting utility for Zope3",
diff --git a/tox.ini b/tox.ini
index 5c1a873..4efdbc4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py26, py27, py33
+envlist = py26 py27,py33,py34
 
 [testenv]
 commands =