diff --git a/CHANGES.rst b/CHANGES.rst
index df03948..837d5cf 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,7 +2,7 @@
 CHANGES
 =======
 
-4.2.0 (unreleased)
+4.2.0 (2020-03-23)
 ------------------
 
 - Add support for Python 3.7 and 3.8.
diff --git a/setup.py b/setup.py
index 7b3f538..9615c9c 100644
--- a/setup.py
+++ b/setup.py
@@ -42,7 +42,7 @@ def read(*rnames):
 
 setup(
     name='zope.app.wsgi',
-    version='4.2.0.dev0',
+    version='4.2.0',
     url='https://github.com/zopefoundation/zope.app.wsgi',
     license='ZPL 2.1',
     description='WSGI application for the zope.publisher',