diff --git a/CHANGES.rst b/CHANGES.rst
index acc1332..46c6a8f 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,7 +2,7 @@
  CHANGES
 =========
 
-4.1.0 (unreleased)
+4.1.0 (2021-03-22)
 ==================
 
 - Add support for Python 3.7, 3.8 and 3.9.
diff --git a/setup.py b/setup.py
index e4cd016..244b99d 100644
--- a/setup.py
+++ b/setup.py
@@ -29,7 +29,7 @@ def read(*rnames):
 
 
 setup(name='zope.app.tree',
-      version='4.1.0.dev0',
+      version='4.1.0',
       author='Zope Foundation and Contributors',
       author_email='zope-dev@zope.org',
       description='Static Tree Implementation',