diff --git a/CHANGES.rst b/CHANGES.rst
index 68ebcb5c..71b8e7ea 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,7 +2,7 @@
  CHANGES
 =========
 
-4.0.1 (unreleased)
+4.2.0 (2018-08-21)
 ==================
 
 - Add support for Python 3.7.
diff --git a/setup.py b/setup.py
index d4e9af2d..aa838e7f 100644
--- a/setup.py
+++ b/setup.py
@@ -58,7 +58,7 @@ def read(*rnames):
 
 setup(
     name='zope.app.apidoc',
-    version='4.0.1.dev0',
+    version='4.2.0',
     author='Zope Corporation and Contributors',
     author_email='zope-dev@zope.org',
     description='API Documentation and Component Inspection for Zope 3',