diff --git a/CHANGES.txt b/CHANGES.txt
index 51691a5..22fff0b 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,7 +1,7 @@
 Changelog
 =========
 
-4.2 (unreleased)
+4.2 (2020-09-30)
 ----------------
 
 - Add support for Python 3.8 and 3.9.
diff --git a/setup.py b/setup.py
index 7bd33da..848870a 100644
--- a/setup.py
+++ b/setup.py
@@ -16,7 +16,7 @@
 
 setup(
     name='AuthEncoding',
-    version='4.2.dev0',
+    version='4.2',
     url='https://github.com/zopefoundation/AuthEncoding',
     project_urls={
         'Sources': 'https://github.com/zopefoundation/AuthEncoding',